Shared Storage overview | Privacy Sandbox

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class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="_book"> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising" ><span class="devsite-nav-text" tooltip>About private advertising</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Start your integration</span> </div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Web</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/web" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/web" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/web" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/web/chrome-facilitated-testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/web/chrome-facilitated-testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/web/chrome-facilitated-testing" ><span class="devsite-nav-text" tooltip>Chrome-facilitated testing</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/web/relevance-testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/web/relevance-testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/web/relevance-testing" ><span class="devsite-nav-text" tooltip>Relevance APIs testing guidance</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/android" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/android" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/android" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/android/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/android/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/android/setup" ><span class="devsite-nav-text" tooltip>Set up your development environment</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/android/setup-api-access" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/android/setup-api-access" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/android/setup-api-access" ><span class="devsite-nav-text" tooltip>Configure AdServices</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/android/download" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/android/download" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/android/download" ><span class="devsite-nav-text" tooltip>Set up a device or emulator image</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/android/setup-device-access" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/android/setup-device-access" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/android/setup-device-access" ><span class="devsite-nav-text" tooltip>Configure devices to use Privacy Sandbox on Android</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/setup/android/troubleshooting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/setup/android/troubleshooting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/setup/android/troubleshooting" ><span class="devsite-nav-text" tooltip>Troubleshoot your setup</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Enrollment</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/enrollment" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/enrollment" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/enrollment" ><span class="devsite-nav-text" tooltip>Enroll your platform with Privacy Sandbox</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/enrollment/faqs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/enrollment/faqs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/enrollment/faqs" ><span class="devsite-nav-text" tooltip>Frequently asked questions</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Ads lifecycle</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/manage-ad-audience" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/manage-ad-audience" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/manage-ad-audience" ><span class="devsite-nav-text" tooltip>Audiences</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/manage-ad-auctions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/manage-ad-auctions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/manage-ad-auctions" ><span class="devsite-nav-text" tooltip>Auctions</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/measure-ad-performance" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/measure-ad-performance" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/measure-ad-performance" ><span class="devsite-nav-text" tooltip>Performance</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Topics</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics" ><span class="devsite-nav-text" tooltip>Overview</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/why-topics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/why-topics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/why-topics" ><span class="devsite-nav-text" tooltip>Why do we need Topics</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Topics API for Web</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/web" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/web" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/web" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/web/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/web/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/web/setup" ><span class="devsite-nav-text" tooltip>Setup</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/web/implement" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/web/implement" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/web/implement" ><span class="devsite-nav-text" tooltip>Implement Topics</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/web/test-and-go-live" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/web/test-and-go-live" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/web/test-and-go-live" ><span class="devsite-nav-text" tooltip>Test & go live</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/web/tooling" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/web/tooling" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/web/tooling" ><span class="devsite-nav-text" tooltip>Tooling</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/web/controls" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/web/controls" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/web/controls" ><span class="devsite-nav-text" tooltip>Customization & opt-out</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/web/support" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/web/support" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/web/support" ><span class="devsite-nav-text" tooltip>Support</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-experimental"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Topics API for Android</span><span class="devsite-nav-icon material-icons" data-icon="experimental" data-title="Experimental!" aria-hidden="true"></span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/android" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/android" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/android" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/android/implement" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/android/implement" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/android/implement" ><span class="devsite-nav-text" tooltip>Implement Topics</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics/android/controls" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics/android/controls" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics/android/controls" ><span class="devsite-nav-text" tooltip>Customization & opt-out</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Protected Audience</span> </div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Web</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/feature-status" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/feature-status" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/feature-status" ><span class="devsite-nav-text" tooltip>Status of pending API capabilities</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Developer guide</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/protected-audience-experiment" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/protected-audience-experiment" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/protected-audience-experiment" ><span class="devsite-nav-text" tooltip>Experiment</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/ad-auction" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/ad-auction" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/ad-auction" ><span class="devsite-nav-text" tooltip>Seller guide - Run ad auctions</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/reporting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/reporting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/reporting" ><span class="devsite-nav-text" tooltip>Auction reporting</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/guide/reporting-id" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/guide/reporting-id" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/guide/reporting-id" ><span class="devsite-nav-text" tooltip>Reporting IDs</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/latency" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/latency" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/latency" ><span class="devsite-nav-text" tooltip>Improve auction latency</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/reports" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/reports" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/reports" ><span class="devsite-nav-text" tooltip>Report on auction results</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sequential-auction-setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sequential-auction-setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sequential-auction-setup" ><span class="devsite-nav-text" tooltip>Sequential auction setup with header bidding and multi-seller Protected Audience auction</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/troubleshoot" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/troubleshoot" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/troubleshoot" ><span class="devsite-nav-text" tooltip>Troubleshoot</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/opt-out" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/opt-out" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/opt-out" ><span class="devsite-nav-text" tooltip>Opt out</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/k-anonymity" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/k-anonymity" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/k-anonymity" ><span class="devsite-nav-text" tooltip>K-anonymity</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/publisher-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/publisher-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/publisher-guide" ><span class="devsite-nav-text" tooltip>Publisher guide</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/define-audience-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/define-audience-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/define-audience-data" ><span class="devsite-nav-text" tooltip>Define audience data</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/update-audience-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/update-audience-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/update-audience-data" ><span class="devsite-nav-text" tooltip>Update audience data and refresh ads</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/delegate-audience-management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/delegate-audience-management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/delegate-audience-management" ><span class="devsite-nav-text" tooltip>Delegate audience management to a third-party</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/auction/configure-auction" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/auction/configure-auction" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/auction/configure-auction" ><span class="devsite-nav-text" tooltip>Set up an ad auction on the publisher's page</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/auction/single-seller-auction" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/auction/single-seller-auction" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/auction/single-seller-auction" ><span class="devsite-nav-text" tooltip>Run a browser based auction with a single seller</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/auction/multi-seller-auction" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/auction/multi-seller-auction" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/auction/multi-seller-auction" ><span class="devsite-nav-text" tooltip>Run a browser based auction with multiple sellers</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/auction/sequential-auction" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/auction/sequential-auction" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/auction/sequential-auction" ><span class="devsite-nav-text" tooltip>Sequential auction setup with contextual ad auction</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/auction/render-ad" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/auction/render-ad" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/auction/render-ad" ><span class="devsite-nav-text" tooltip>Render an ad</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/auction/bid-in-auction-ad-slot" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/auction/bid-in-auction-ad-slot" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/auction/bid-in-auction-ad-slot" ><span class="devsite-nav-text" tooltip>Bid in an auction to buy an ad slot</span></a></li><li class="devsite-nav-item devsite-nav-external"><a href="https://docs.google.com/document/d/1b6YlL5CFVfCo6hHMqfOYp2WJNdsBTSvM4eayrmbm7e4/view" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: https://docs.google.com/document/d/1b6YlL5CFVfCo6hHMqfOYp2WJNdsBTSvM4eayrmbm7e4/view" track-type="bookNav" track-name="click" track-metadata-eventdetail="https://docs.google.com/document/d/1b6YlL5CFVfCo6hHMqfOYp2WJNdsBTSvM4eayrmbm7e4/view" ><span class="devsite-nav-text" tooltip>API walkthrough</span><span class="devsite-nav-icon material-icons" data-icon="external" data-title="External" aria-hidden="true"></span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/topics-in-audiences" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/topics-in-audiences" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/topics-in-audiences" ><span class="devsite-nav-text" tooltip>Use Topics to target an audience</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Use cases</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience-api/use-case/deals" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience-api/use-case/deals" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience-api/use-case/deals" ><span class="devsite-nav-text" tooltip>Deals</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/auction/pace-ad-delivery" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/auction/pace-ad-delivery" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/auction/pace-ad-delivery" ><span class="devsite-nav-text" tooltip>Pace ad delivery by frequency</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/mediation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/mediation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/mediation" ><span class="devsite-nav-text" tooltip>Mediation</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/frequency-capping" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/frequency-capping" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/frequency-capping" ><span class="devsite-nav-text" tooltip>Frequency capping</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/appinstall-filtering" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/appinstall-filtering" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/appinstall-filtering" ><span class="devsite-nav-text" tooltip>App install ads filtering</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Developer guide</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/developer-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide" ><span class="devsite-nav-text" tooltip>Protected Audience developer guide</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/define-audience-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/developer-guide/define-audience-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/define-audience-data" ><span class="devsite-nav-text" tooltip>Define audience data</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/update-audience-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/developer-guide/update-audience-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/update-audience-data" ><span class="devsite-nav-text" tooltip>Update audience data and refresh ads</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/profiling" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/developer-guide/profiling" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/profiling" ><span class="devsite-nav-text" tooltip>Profile a Protected Audience auction</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/debug-reporting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/developer-guide/debug-reporting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/debug-reporting" ><span class="devsite-nav-text" tooltip>Debug reporting</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/inspect_audiences_cli" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/developer-guide/inspect_audiences_cli" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/inspect_audiences_cli" ><span class="devsite-nav-text" tooltip>Inspect custom audiences on the command line</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/testing-setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/developer-guide/testing-setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/developer-guide/testing-setup" ><span class="devsite-nav-text" tooltip>Testing setup</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/integration-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/integration-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/integration-guide" ><span class="devsite-nav-text" tooltip>Integration guide</span></a></li><li class="devsite-nav-item"><a href="https://developer.android.com/design-for-safety/privacy-sandbox/reference/packages" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: https://developer.android.com/design-for-safety/privacy-sandbox/reference/packages" track-type="bookNav" track-name="click" track-metadata-eventdetail="https://developer.android.com/design-for-safety/privacy-sandbox/reference/packages" ><span class="devsite-nav-text" tooltip>API reference</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Protected App Signals</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/protected-app-signals" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/protected-app-signals" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/protected-app-signals" ><span class="devsite-nav-text" tooltip>Overview for Android</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/protected-app-signals-developer-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/protected-app-signals-developer-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/protected-app-signals-developer-guide" ><span class="devsite-nav-text" tooltip>Developer guide</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Bidding and Auction Services</span> </div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Web</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/bidding-and-auction-services/web/architecture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/bidding-and-auction-services/web/architecture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/bidding-and-auction-services/web/architecture" ><span class="devsite-nav-text" tooltip>Architecture</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/bidding-and-auction-services/web/buyer-integration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/bidding-and-auction-services/web/buyer-integration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/bidding-and-auction-services/web/buyer-integration" ><span class="devsite-nav-text" tooltip>Integrate with B&A as a buyer</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/bidding-and-auction-services/web/seller-integration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/bidding-and-auction-services/web/seller-integration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/bidding-and-auction-services/web/seller-integration" ><span class="devsite-nav-text" tooltip>Integrate with B&A as a seller</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/codelab/ba-services-local-testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/codelab/ba-services-local-testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/codelab/ba-services-local-testing" ><span class="devsite-nav-text" tooltip>Test B&A for Web end-to-end locally</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/bidding-and-auction-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/bidding-and-auction-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/bidding-and-auction-services" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/protected-audience/android/bidding-and-auction-integration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/protected-audience/android/bidding-and-auction-integration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/protected-audience/android/bidding-and-auction-integration" ><span class="devsite-nav-text" tooltip>Integration and optimization</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Fenced frames</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/fenced-frame" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/fenced-frame" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/fenced-frame" ><span class="devsite-nav-text" tooltip>Overview for Web</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Attribution Reporting</span> </div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Web</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-updates" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-updates" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-updates" ><span class="devsite-nav-text" tooltip>API updates</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/chrome-shipping" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/chrome-shipping" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/chrome-shipping" ><span class="devsite-nav-text" tooltip>Why Chrome shipped the Attribution Reporting API</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/system-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/system-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/system-overview" ><span class="devsite-nav-text" tooltip>System overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/summary-reports" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/summary-reports" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/summary-reports" ><span class="devsite-nav-text" tooltip>Generate summary reports</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/report-schedules" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/report-schedules" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/report-schedules" ><span class="devsite-nav-text" tooltip>Report schedules</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/constraints" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/constraints" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/constraints" ><span class="devsite-nav-text" tooltip>Constraints</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Developer guide</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/dev-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/dev-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/dev-guide" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/getting-started" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/getting-started" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/getting-started" ><span class="devsite-nav-text" tooltip>Get started</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/register-attribution-source" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/register-attribution-source" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/register-attribution-source" ><span class="devsite-nav-text" tooltip>Register an attribution source</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/register-attribution-trigger" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/register-attribution-trigger" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/register-attribution-trigger" ><span class="devsite-nav-text" tooltip>Register triggers</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/enable-conversion-measurement" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/enable-conversion-measurement" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/enable-conversion-measurement" ><span class="devsite-nav-text" tooltip>Enable conversion measurement</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/change-attribution-logic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/change-attribution-logic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/change-attribution-logic" ><span class="devsite-nav-text" tooltip>Change attribution logic</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/define-filters" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/define-filters" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/define-filters" ><span class="devsite-nav-text" tooltip>Define filters</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/prevent-duplication" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/prevent-duplication" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/prevent-duplication" ><span class="devsite-nav-text" tooltip>Prevent duplication</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/custom-report-windows" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/custom-report-windows" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/custom-report-windows" ><span class="devsite-nav-text" tooltip>Custom report windows</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging" ><span class="devsite-nav-text" tooltip>Introduction to debug reports</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging/part-2" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging/part-2" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging/part-2" ><span class="devsite-nav-text" tooltip>Set up debug reports</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging/part-3" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging/part-3" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-debugging/part-3" ><span class="devsite-nav-text" tooltip>Debugging cookbook</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/summary-reports-intro" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/summary-reports-intro" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/summary-reports-intro" ><span class="devsite-nav-text" tooltip>Introduction to summary reports</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/contribution-budget" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/contribution-budget" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/contribution-budget" ><span class="devsite-nav-text" tooltip>Contribution budget</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/aggregation-keys" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/aggregation-keys" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/aggregation-keys" ><span class="devsite-nav-text" tooltip>Aggregation keys</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/understanding-noise" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/understanding-noise" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/understanding-noise" ><span class="devsite-nav-text" tooltip>Understand noise</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/working-with-noise" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/working-with-noise" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/working-with-noise" ><span class="devsite-nav-text" tooltip>Work with noise</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/design-decisions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/design-decisions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/design-decisions" ><span class="devsite-nav-text" tooltip>Noiselab</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/measurement-implementation-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/measurement-implementation-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/measurement-implementation-guide" ><span class="devsite-nav-text" tooltip>Measurement implementation guide</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/measurement-testing-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/measurement-testing-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/measurement-testing-guide" ><span class="devsite-nav-text" tooltip>Measurement testing guide</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-data-clearing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-data-clearing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/attribution-reporting-data-clearing" ><span class="devsite-nav-text" tooltip>Data clearing</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/cross-web-app" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/cross-web-app" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/cross-web-app" ><span class="devsite-nav-text" tooltip>Cross app and web measurement</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/android" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/android" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/android" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/android/attribution-app-to-web" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/android/attribution-app-to-web" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/android/attribution-app-to-web" ><span class="devsite-nav-text" tooltip>Cross app and web measurement</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/android/simulation-library" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/android/simulation-library" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/android/simulation-library" ><span class="devsite-nav-text" tooltip>Measurement Simulation Library</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Developer guide</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/android/developer-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/android/developer-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/android/developer-guide" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/cross-web-app" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/cross-web-app" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/cross-web-app" ><span class="devsite-nav-text" tooltip>Cross app and web measurement</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/android/xna-examples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/android/xna-examples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/android/xna-examples" ><span class="devsite-nav-text" tooltip>Cross-network attribution examples</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/attribution-reporting/android/integration-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/attribution-reporting/android/integration-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/attribution-reporting/android/integration-guide" ><span class="devsite-nav-text" tooltip>Integration guide</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="https://developer.android.com/design-for-safety/privacy-sandbox/reference/packages" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: https://developer.android.com/design-for-safety/privacy-sandbox/reference/packages" track-type="bookNav" track-name="click" track-metadata-eventdetail="https://developer.android.com/design-for-safety/privacy-sandbox/reference/packages" ><span class="devsite-nav-text" tooltip>API reference</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Private Aggregation</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/private-aggregation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/private-aggregation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/private-aggregation" ><span class="devsite-nav-text" tooltip>Overview for Web</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/private-aggregation/fundamentals" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/private-aggregation/fundamentals" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/private-aggregation/fundamentals" ><span class="devsite-nav-text" tooltip>Fundamentals</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/private-aggregation/private-aggregation-experiment" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/private-aggregation/private-aggregation-experiment" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/private-aggregation/private-aggregation-experiment" ><span class="devsite-nav-text" tooltip>Experiment</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Use cases</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/private-aggregation/unique-reach" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/private-aggregation/unique-reach" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/private-aggregation/unique-reach" ><span class="devsite-nav-text" tooltip>Measure unique reach</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/private-aggregation/k-freq-reach" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/private-aggregation/k-freq-reach" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/private-aggregation/k-freq-reach" ><span class="devsite-nav-text" tooltip>Measure K+ frequency reach</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/private-aggregation/user-demographics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/private-aggregation/user-demographics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/private-aggregation/user-demographics" ><span class="devsite-nav-text" tooltip>Measure user demographic</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/private-aggregation/multi-touch-attribution" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/private-aggregation/multi-touch-attribution" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/private-aggregation/multi-touch-attribution" ><span class="devsite-nav-text" tooltip>Multi-touch attribution</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Aggregation Service</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service" ><span class="devsite-nav-text" tooltip>Overview</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/get-started" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/get-started" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/get-started" ><span class="devsite-nav-text" tooltip>Get Started</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/coordinators-ags-purpose" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/coordinators-ags-purpose" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/coordinators-ags-purpose" ><span class="devsite-nav-text" tooltip>Coordinator's Purpose In Aggregation Service</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/privacy-protection-report-strategy" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/privacy-protection-report-strategy" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/privacy-protection-report-strategy" ><span class="devsite-nav-text" tooltip>Privacy Protections & Report Strategy</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/operate-ags" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/operate-ags" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/operate-ags" ><span class="devsite-nav-text" tooltip>Operate Aggregation Service</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/receive-store-aggregatable-reports" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/receive-store-aggregatable-reports" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/receive-store-aggregatable-reports" ><span class="devsite-nav-text" tooltip>Receive & Store Aggregatable Reports</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/understand-ags-api" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/understand-ags-api" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/understand-ags-api" ><span class="devsite-nav-text" tooltip>Understand the API</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/batch-strategies" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/batch-strategies" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/batch-strategies" ><span class="devsite-nav-text" tooltip>Batch Strategies</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Developer Guides</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/developer-guides/filtering-ids" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/developer-guides/filtering-ids" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/developer-guides/filtering-ids" ><span class="devsite-nav-text" tooltip>Filtering IDs</span></a></li></ul></div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/load-testing-framework" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/load-testing-framework" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/load-testing-framework" ><span class="devsite-nav-text" tooltip>Load Testing Framework</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/aggregation-service/tos" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/aggregation-service/tos" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/aggregation-service/tos" ><span class="devsite-nav-text" tooltip>Terms of Service</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Select URL</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/select-url" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/select-url" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/select-url" ><span class="devsite-nav-text" tooltip>Overview for Web</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/select-url/creative-rotation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/select-url/creative-rotation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/select-url/creative-rotation" ><span class="devsite-nav-text" tooltip>Rotate ad creatives</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/select-url/creative-selection-by-frequency" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/select-url/creative-selection-by-frequency" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/select-url/creative-selection-by-frequency" ><span class="devsite-nav-text" tooltip>Select ad creative by frequency</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/select-url/ab-testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/select-url/ab-testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/select-url/ab-testing" ><span class="devsite-nav-text" tooltip>Run A/B testing</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/select-url/known-customer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/select-url/known-customer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/select-url/known-customer" ><span class="devsite-nav-text" tooltip>Customize experience for known customers</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Shared Storage</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/shared-storage" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/shared-storage" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/shared-storage" ><span class="devsite-nav-text" tooltip>Overview for Web</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/shared-storage/api-walkthrough" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/shared-storage/api-walkthrough" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/shared-storage/api-walkthrough" ><span class="devsite-nav-text" tooltip>API walkthrough</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/shared-storage/try-the-demo" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/shared-storage/try-the-demo" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/shared-storage/try-the-demo" ><span class="devsite-nav-text" tooltip>Try the demo</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/shared-storage/debugging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/shared-storage/debugging" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/shared-storage/debugging" ><span class="devsite-nav-text" tooltip>Debugging</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>SDK Runtime</span> </div></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime" ><span class="devsite-nav-text" tooltip>Overview</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/architecture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/architecture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/architecture" ><span class="devsite-nav-text" tooltip>Architecture</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/ui-presentation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/ui-presentation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/ui-presentation" ><span class="devsite-nav-text" tooltip>UI presentation APIs</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/viewability" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/viewability" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/viewability" ><span class="devsite-nav-text" tooltip>Viewability</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/backward-compatibility" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/backward-compatibility" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/backward-compatibility" ><span class="devsite-nav-text" tooltip>Backward compatibility</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/full-screen-ads" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/full-screen-ads" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/full-screen-ads" ><span class="devsite-nav-text" tooltip>Full-screen ads</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/native-ads" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/native-ads" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/native-ads" ><span class="devsite-nav-text" tooltip>Native ads</span></a></li> <li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/mediation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/mediation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/mediation" ><span class="devsite-nav-text" tooltip>Mediation</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Developer guide</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/developer-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/key-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/developer-guide/key-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/key-concepts" ><span class="devsite-nav-text" tooltip>Key concepts</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/dev-environment" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/developer-guide/dev-environment" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/dev-environment" ><span class="devsite-nav-text" tooltip>Set up your developer environment</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/build-re-sdk" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/developer-guide/build-re-sdk" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/build-re-sdk" ><span class="devsite-nav-text" tooltip>Build a Runtime-Enabled SDK</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/consume-re-sdk" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/developer-guide/consume-re-sdk" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/consume-re-sdk" ><span class="devsite-nav-text" tooltip>Consume the Runtime-Enabled SDK</span></a></li><li class="devsite-nav-item"><a href="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/build-test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/private-advertising/sdk-runtime/developer-guide/build-test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/private-advertising/sdk-runtime/developer-guide/build-test" ><span class="devsite-nav-text" tooltip>Build and test</span></a></li></ul></div></li> </ul> </div> </div> </nav> </devsite-book-nav> <section id="gc-wrapper"> <main role="main" id="main-content" class="devsite-main-content" has-book-nav has-sidebar > <div class="devsite-sidebar"> <div class="devsite-sidebar-content"> <devsite-toc class="devsite-nav" role="navigation" aria-label="On this page" depth="2" scrollbars ></devsite-toc> <devsite-recommendations-sidebar class="nocontent devsite-nav"> </devsite-recommendations-sidebar> </div> </div> <devsite-content> <article class="devsite-article"> <div class="devsite-article-meta nocontent" role="navigation"> <ul class="devsite-breadcrumb-list" aria-label="Breadcrumb"> <li class="devsite-breadcrumb-item "> <a href="https://developers.google.com/" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="" > Home </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developers.google.com/privacy-sandbox" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="2" track-type="globalNav" track-name="breadcrumb" track-metadata-position="2" track-metadata-eventdetail="Privacy Sandbox" > Privacy Sandbox </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developers.google.com/privacy-sandbox/private-advertising" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="3" track-type="globalNav" track-name="breadcrumb" track-metadata-position="3" track-metadata-eventdetail="" > Private advertising </a> </li> </ul> <devsite-thumb-rating position="header"> </devsite-thumb-rating> </div> <devsite-feedback position="header" project-name="Privacy Sandbox" product-id="5335444" bucket="" context="" version="t-devsite-webserver-20250211-r00-rc00.466928320959134316" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="header" class="nocontent" disable-product-feedback project-icon="https://developers.google.com/static/privacy-sandbox/assets/images/privacy-sandbox-logo.png" > <button> Send feedback </button> </devsite-feedback> <h1 class="devsite-page-title" tabindex="-1"> Shared Storage overview </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <devsite-recommendations-dropdown class="nocontent"></devsite-recommendations-dropdown> <div class="devsite-article-body clearfix "> <p>The Shared Storage API enables websites to store and access data that's not isolated by the top-level site. This enables and facilitates cross-site use cases while respecting user privacy.</p> <p>While Chrome has <a href="/privacy-sandbox/cookies/storage-partitioning">partitioned storage</a> and is moving to a new experience that <a href="https://privacysandbox.com/news/privacy-sandbox-update/">elevates user choice on third-party cookies</a>, there are a number of legitimate use cases that rely on unpartitioned storage which wouldn't be possible without assistance from new web APIs. For example, a content producer may want to measure content reach across different sites, without reliance on cross-site identifiers. The Shared Storage API addresses this need by providing a more private mechanism for storing and accessing unpartitioned data across sites.</p> <p><devsite-video video-id="X52kDDacvkw"></devsite-video></p> <h2 id="what_is_the_shared_storage_api" data-text="What is the Shared Storage API?" tabindex="-1">What is the Shared Storage API?</h2> <p>The Shared Storage API is a general-purpose storage facility that is designed to enable privacy preserving cross-site use cases. With features similar to both the localStorage and sessionStorage APIs, Shared Storage is a key-value store in which data can be written to at any time. Unlike other Web Storage APIs, the Shared Storage data can be shared across different top-level sites; however, the Shared Storage data can only be read from a secure environment and output using restricted Output APIs.</p> <p><img src="/static/privacy-sandbox/assets/images/shared-storage/shared-storage-embedded.png" alt="Diagram showing the shoes.example iframe embedded into the sites of different publishers including news.example, blog.example. The shoes.com site can access its own unpartitioned storage from each top-level site." class="block" style="width:40rem; margin:auto"></p> <p>In the preceding diagram, the <code translate="no" dir="ltr">shoes.example</code> site can be embedded into other publisher sites like <code translate="no" dir="ltr">news.example</code> and still access the same data.</p> <p>This Shared Storage capability enables cross-site capabilities while advancing user privacy by preventing tracking individual site visitors and restricting data access. Data can only be accessed within a secure environment with limited output capabilities (worklets).</p> <p><img src="/static/privacy-sandbox/assets/images/shared-storage/shared-storage-output-gates.png" alt="Diagram showing enrolled sites can write any type of key/value data into Shared Storage, but reading the data out is restricted to specific output APIs."></p> <p>Shared Storage is the underlying storage infrastructure for a limited number of Output APIs. An Output API is the only way to use Shared Storage data. The Output APIs are:</p> <ul> <li><a href="/privacy-sandbox/private-advertising/shared-storage/content-selection"><strong>Select URL</strong></a>: Select a URL from a provided list, based on the stored data, and then render that content in a fenced frame.</li> <li><a href="/privacy-sandbox/private-advertising/private-aggregation"><strong>Private Aggregation</strong></a>: Send cross-site data through the Private Aggregation API to generate a <a href="/privacy-sandbox/relevance/attribution-reporting/summary-reports">summary report</a>.</li> </ul> <h2 id="why_do_we_need_shared_storage" data-text="Why do we need Shared Storage?" tabindex="-1">Why do we need Shared Storage?</h2> <p>The Shared Storage API is a flexible storage mechanism, which web developers can use in combination with the output APIs to address many use cases, including replacing several existing uses for third-party cookies. See more details about potential use-cases of the output APIs: <a href="/privacy-sandbox/private-advertising/shared-storage/content-selection">Select URL</a> and <a href="/privacy-sandbox/private-advertising/private-aggregation">Private Aggregation</a>.</p> <p>Is your company looking for cross-site storage solutions that haven't yet been addressed? You can share your use case and create an issue on the open-source <a href="https://github.com/WICG/shared-storage/issues">Shared Storage GitHub repository</a>.</p> <h3 id="output_apis_and_uses_cases_compatible_with_shared_storage" data-text="Output APIs and uses cases compatible with Shared Storage" tabindex="-1">Output APIs and uses cases compatible with Shared Storage</h3> <table class="with-heading-tint width-full"> <thead> <tr> <th>Output API</th> <th>Use case</th> <th>Description</th> </tr> </thead> <tr> <td> <a href="/privacy-sandbox/private-advertising/shared-storage/content-selection">Select URL</a> </td> <td> <a href="/privacy-sandbox/relevance/shared-storage/creative-rotation">Rotate ad creatives</a> </td> <td> You can store data, such as creative ID, view counts, and user interaction, to determine which creative users' see across different sites. This lets you balance views and avoid oversaturation of certain content and thus avoid a possible negative user experience. </td> </tr> <tr> <td> <a href="/privacy-sandbox/private-advertising/shared-storage/content-selection">Select URL</a> </td> <td> <a href="/privacy-sandbox/private-advertising/shared-storage/ab-testing">Run A/B testing</a> </td> <td> An A/B test compares two or more versions of a configuration to determine which performs best. You can assign a user to an experiment group, then store that group in Shared Storage for cross site access. </td> </tr> <tr> <td> <a href="/privacy-sandbox/private-advertising/shared-storage/content-selection">Select URL</a> </td> <td> <a href="/privacy-sandbox/private-advertising/shared-storage/known-customer">Customize user experience for known customers</a> </td> <td> You can share custom content and calls-to-action based on a user's registration status or other user states. </td> </tr> <tr> <td> <a href="/privacy-sandbox/private-advertising/shared-storage/content-selection">Select URL</a>, <a href="/privacy-sandbox/private-advertising/private-aggregation">Private aggregation</a> </td> <td> Anti-abuse mitigations </td> <td> Anti-abuse, anti-fraud, and web security organizations often use proprietary techniques to detect malicious users, whether automated bots or real humans trying to cause harm. It's possible to test many different strategies in this use case, whether it's using the Select URL API to encode a user trustworthiness rating or using the Private Aggregation API to build datasets for anomaly detection. </td> </tr> <tr> <td> <a href="/privacy-sandbox/private-advertising/private-aggregation">Private aggregation</a> </td> <td> <a href="/privacy-sandbox/private-advertising/private-aggregation/unique-reach">Measure unique reach</a> </td> <td> Many content producers and advertisers often want to know how many unique people have viewed their displayed content. You can use Shared Storage to report on the first time a user sees your ad, embedded video, or publication. You can prevent duplicative counting of that same user on a different site, and generate an aggregated noisy report for your approximate unique content reach. </td> </tr> <tr> <td> <a href="/privacy-sandbox/private-advertising/private-aggregation">Private aggregation</a> </td> <td> <a href="/privacy-sandbox/private-advertising/private-aggregation/user-demographics">Measure user demographics</a> </td> <td> Content producers are eager to understand the demographics of their audience. Shared Storage lets you capture user demographic data on your first-party site and take advantage of aggregated reporting to analyze this information across various other platforms, like embedded content. </td> </tr> <tr> <td> <a href="/privacy-sandbox/private-advertising/private-aggregation">Private aggregation</a> </td> <td> <a href="/privacy-sandbox/private-advertising/private-aggregation/k-freq-reach">Measure K+ frequency reach</a> </td> <td> Sometimes described as "effective frequency," there is often a minimum number of views before a user will recognize or recall certain content (often in the context of advertisement views). You can use Shared Storage to build reports of unique users that have seen a piece of content at least K times. </td> </tr> </table> <h2 id="how_does_shared_storage_work" data-text="How does Shared Storage work?" tabindex="-1">How does Shared Storage work?</h2> <p>Shared Storage lets you make informed decisions based on cross-site data, without sharing user information (such as browser history or other personal details) with an embedding site or exfiltrating data to your own servers.</p> <p>You can write to shared storage at any time, but you can only read the Shared Storage values in a secure environment, known as a worklet.</p> <aside class="key-term"> <b>Key term:</b> a <a href="https://developer.mozilla.org/docs/Web/API/Worklet">worklet</a> lets you run specific JavaScript functions and return information back to the requester. There are different types of worklets, Shared Storage uses the <a href="https://developer.mozilla.org/docs/Web/API/SharedStorageWorklet"> <code translate="no" dir="ltr">SharedStorageWorklet</code> </a>. Within a <code translate="no" dir="ltr">SharedStorageWorklet</code>, you can execute JavaScript but you cannot interact or communicate with the outside page. </aside> <p>Shared Storage worklets are where you add your business logic and then read and process a value from Shared Storage without directly returning the exact value to the worklet caller. You can use either the Private Aggregation or Select URL Output APIs to extract information from the worklet. Additional Output APIs may become available as new use cases are reported.</p> <h2 id="api_status" data-text="API status" tabindex="-1">API status</h2> <p>The <a href="https://github.com/WICG/shared-storage">Shared Storage API</a> is in <a href="/privacy-sandbox/blog/privacy-sandbox-launch">general availability</a>. Follow the instructions to <a href="/privacy-sandbox/private-advertising/enrollment">enroll for the Privacy Sandbox</a>, to use the API or enable for local development.</p> <table class="with-heading-tint with-borders width-full"> <thead> <tr> <th>Proposal</th> <th>Status</th> </tr> </thead> <tr> <td>Allow writing from response headers<br> <a href="https://github.com/WICG/shared-storage/blob/main/README.md#from-response-headers">Explainer</a> <br><a href="https://github.com/WICG/shared-storage/issues/126#issuecomment-2007679528">GitHub Issue</a></td> <td>Available in M124. Can be manually enabled in M119-M123</td> </tr> <tr> <td>Debugging Shared Storage worklets with DevTools<br> <a href="/privacy-sandbox/relevance/shared-storage#debug_shared_storage_worklets_with_devtools">Section</a></td> <td>Available in M120</td> </tr> <tr> <td>Update Shared Storage data storage limit to 5MB<br> <a href="https://github.com/WICG/shared-storage?tab=readme-ov-file#data-storage-limits">Explainer</a></td> <td>Available in M124</td> </tr> <tr> <td><code translate="no" dir="ltr">createWorklet()</code> to create cross-origin worklets without an iframe</td> <td>Available in M125</td> </tr> <tr> <td>Allow cross-origin script in <code translate="no" dir="ltr">addModule()</code>, and align <code translate="no" dir="ltr">createWorklet()</code> to match the behavior</td> <td>Available in M130</td> </tr> <tr> <td>Custom data origin support in <code translate="no" dir="ltr">createWorklet()</code><br> <a href="https://github.com/WICG/shared-storage/blob/ad7c1a34583cf70173f2e2ce28837df52e8a6bd4/README.md#outside-of-worklets-eg-places-where-writing-can-happen:~:text=By%20default%2C%20the%20worklet%20uses%20the%20invoking%20context%27s%20origin%20as%20its%20partition%20origin%20for%20accessing%20shared%20storage%20data%20and%20for%20budget%20checking%20and%20withdrawing">Explainer</a></td> <td>Expected in Q1 2025</td> </tr> <tr> <td>Allow Shared Storage worklet to read interest groups<br> <a href="https://github.com/WICG/shared-storage#:~:text=frame%2C%20returns%20undefined.-,interestGroups,-()">Explainer</a></td> <td>Expected in Q1 2025</td> </tr> <tr> <td>Debugging Shared Storage worklets with DevTools<br> <a href="https://github.com/WICG/shared-storage/blob/main/README.md#proposed-api-surface">Explainer</a><br> <a href="https://github.com/WICG/shared-storage/pull/199">GitHub issue</a></td> <td>Expected in Q1 2025</td> </tr> </table> <h2 id="engage_and_share_feedback" data-text="Engage and share feedback" tabindex="-1">Engage and share feedback</h2> <p>Note that the Shared Storage API proposal is under active discussion and development and therefore subject to change.</p> <p>We're eager to hear your thoughts on the Shared Storage API.</p> <ul> <li><strong>Proposal</strong>: Review the <a href="https://github.com/WICG/shared-storage">detailed proposal</a>.</li> <li><strong>Discussion</strong>: Join the <a href="https://github.com/WICG/shared-storage/issues">ongoing discussion</a> to ask questions and share your insights.</li> </ul> <p><strong>Stay Informed</strong></p> <ul> <li><strong>Mailing List</strong>: Subscribe to <a href="https://groups.google.com/a/chromium.org/g/shared-storage-api-announcements">our mailing list</a> for the latest updates and announcements related to the Shared Storage API.</li> </ul> <p><strong>Need Help?</strong></p> <ul> <li><strong>Developer Support</strong>: Connect with other developers and get answers to your questions in the <a href="https://github.com/GoogleChromeLabs/privacy-sandbox-dev-support">Privacy Sandbox Developer Support repository</a>.</li> </ul> </div> <devsite-recommendations display="in-page" hidden yield> </devsite-recommendations> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-feedback position="footer" project-name="Privacy Sandbox" product-id="5335444" bucket="" context="" version="t-devsite-webserver-20250211-r00-rc00.466928320959134316" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="footer" class="nocontent" disable-product-feedback project-icon="https://developers.google.com/static/privacy-sandbox/assets/images/privacy-sandbox-logo.png" > <button> Send feedback </button> </devsite-feedback> <devsite-recommendations id="recommendations-link" yield></devsite-recommendations> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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