Third-party cookies | Privacy Sandbox

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tooltip>Solutions</span> </div></li> <li class="devsite-nav-item"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/chips?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/cookies/chips" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/cookies/chips"><span class="devsite-nav-text" tooltip>CHIPS</span></a></li> <li class="devsite-nav-item"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/chips-transition?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /privacy-sandbox/cookies/chips-transition" track-type="bookNav" track-name="click" track-metadata-eventdetail="/privacy-sandbox/cookies/chips-transition"><span class="devsite-nav-text" tooltip>Transition to 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class="devsite-landing-row-item-description"> <div class="devsite-landing-row-item-body"> <h3 id="third-party-cookies" data-text="Third-party cookies" class="hide-from-toc no-link" tabindex="0">Third-party cookies</h3> <div class="devsite-landing-row-item-description-content"> <h4 id="understand-cookie-usage-on-your-site.-learn-how-to-transition-to-alternatives." data-text="Understand cookie usage on your site. Learn how to transition to alternatives. " tabindex="-1">Understand cookie usage on your site. <br><br> Learn how to transition to alternatives.</h4> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-3-up devsite-landing-row-cards devsite-landing-row-padding-small" header-position="top"> <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/overview?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> looks_one </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="prepare-for-chrome-changes" data-text="Prepare for Chrome changes" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/overview?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Prepare for Chrome changes </a></h3> <div class="devsite-landing-row-item-description-content"> Learn more about changes to Chrome's treatment of third-party cookies and understand what actions you need to take to preserve your site's features. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/overview?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Prepare for changes</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/audit-cookies?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> looks_two </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="audit-your-use-of-cookies" data-text="Audit your use of cookies" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/audit-cookies?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Audit your use of cookies </a></h3> <div class="devsite-landing-row-item-description-content"> Review your cookies and make a list of those cookies for which you will need to take action to ensure they keep functioning properly. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/audit-cookies?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Start auditing</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/test-for-breakage?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> looks_3 </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="test-for-breakage" data-text="Test for breakage" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/test-for-breakage?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Test for breakage </a></h3> <div class="devsite-landing-row-item-description-content"> Set up Chrome to simulate the state when third-party cookies are blocked by user choice. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/test-for-breakage?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Start testing</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-4-up devsite-landing-row-cards devsite-landing-row-padding-medium devsite-landing-row-large-headings" background="grey" header-position="top"> <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header"> <div class="devsite-landing-row-header-text"> <h2 id="migrate-to-privacy-preserving-solutions" data-text="Migrate to privacy preserving solutions" tabindex="0">Migrate to privacy preserving solutions</h2> <div class="devsite-landing-row-description"> Once you have identified the cookies with issues and you understand the use cases for them, you can work through the following options to pick the necessary solution. </div> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="top"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-green" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> looks_one </div> </div> <div class="devsite-landing-row-item-body"> <h3 id="chips" data-text="CHIPS" class="hide-from-toc no-link" tabindex="0">CHIPS</h3> <div class="devsite-landing-row-item-description-content"> The new cookie attribute, Partitioned, allows developers to opt a cookie into partitioned storage, with separate cookie jars per top-level site. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/chips?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Explore CHIPS</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="top"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-green" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> looks_two </div> </div> <div class="devsite-landing-row-item-body"> <h3 id="storage-access-api" data-text="Storage Access API" class="hide-from-toc no-link" tabindex="0">Storage Access API</h3> <div class="devsite-landing-row-item-description-content"> Storage Access API allows iframes to request storage access permissions when access would otherwise be denied by browser settings. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/storage-access-api?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Explore Storage Access API</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="top"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-green" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> looks_3 </div> </div> <div class="devsite-landing-row-item-body"> <h3 id="related-website-sets" data-text="Related Website Sets" class="hide-from-toc no-link" tabindex="0">Related Website Sets</h3> <div class="devsite-landing-row-item-description-content"> Related Website Sets (RWS) is a way for a company to declare relationships among sites, so that browsers allow limited third-party cookie access for specific purposes. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/related-website-sets?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Explore Related Website Sets</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="top"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-green" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> looks_4 </div> </div> <div class="devsite-landing-row-item-body"> <h3 id="federated-credential-management-api" data-text="Federated Credential Management API" class="hide-from-toc no-link" tabindex="0">Federated Credential Management API</h3> <div class="devsite-landing-row-item-description-content"> A web API for privacy-preserving identity federation. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/fedcm?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Explore FedCM</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-2-up devsite-landing-row-cards devsite-landing-row-no-image-background" header-position="top"> <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header"> <div class="devsite-landing-row-header-text"> <h2 id="guides-for-common-workflows" data-text="Guides for common workflows" tabindex="0">Guides for common workflows</h2> <div class="devsite-landing-row-description"> Understand how to test common workflows that may rely on third-party cookies and decide on which privacy-preserving alternatives to migrate to. </div> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/guides/identity?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> person </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="identity-guide" data-text="Identity guide" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/guides/identity?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Identity guide </a></h3> <div class="devsite-landing-row-item-description-content"> Find recommended solutions for sign-in scenarios. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/guides/identity?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Learn more</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/guides/embeds?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> picture_in_picture_alt </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="embed-guide" data-text="Embed guide" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/guides/embeds?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Embed guide </a></h3> <div class="devsite-landing-row-item-description-content"> Test for embed-related journeys that rely on third-party cookies, and learn how to choose between the privacy-preserving alternatives. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/guides/embeds?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Learn more</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-4-up" background="grey" header-position="left"> <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header"> <div class="devsite-landing-row-header-text"> <h2 id="temporary-exceptions" data-text="Temporary exceptions" tabindex="0">Temporary exceptions</h2> <div class="devsite-landing-row-description"> Cross-site cookies have been a critical part of the web for over a quarter of a century. Moving to alternative solutions requires a coordinated and incremental approach, and we understand there are cases where sites need extra time to make the necessary changes and preserve critical user experiences. </div> </div> <div class="devsite-landing-row-header-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/preserving-critical-user-experiences?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Learn more</a> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description"> <div class="devsite-landing-row-item-body"> <h3 id="grace-period" data-text="Grace period" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/grace-period?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Grace period </a></h3> <div class="devsite-landing-row-item-description-content"> Chrome's third-party cookie grace period provides a way for sites and services experiencing breakage to request additional time to move away from third-party cookies to alternative solutions. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/grace-period?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Learn more</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description"> <div class="devsite-landing-row-item-body"> <h3 id="grace-period-opt-out" data-text="Grace period opt out" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/grace-period-opt-out?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Grace period opt out </a></h3> <div class="devsite-landing-row-item-description-content"> Chrome is providing a mechanism to allow sites to opt out of the third-party cookie grace period for a percentage of users. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/grace-period-opt-out?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Learn more</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description"> <div class="devsite-landing-row-item-body"> <h3 id="heuristics-based-exceptions" data-text="Heuristics based exceptions" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/heuristics-based-exceptions?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Heuristics based exceptions </a></h3> <div class="devsite-landing-row-item-description-content"> Learn more about temporary heuristics based exceptions. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/heuristics-based-exceptions?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Learn more</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description"> <div class="devsite-landing-row-item-body"> <h3 id="enterprise-support" data-text="Enterprise support" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/chrome-enterprise?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Enterprise support </a></h3> <div class="devsite-landing-row-item-description-content"> Learn more about Chrome Enterprise policies for third-party cookies. </div> <div class="devsite-landing-row-item-buttons"><a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/temporary-exceptions/chrome-enterprise?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto" class="button ">Learn more</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-3-up devsite-landing-row-cards devsite-landing-row-no-image-background" header-position="top"> <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header"> <div class="devsite-landing-row-header-text"> <h2 id="news-and-updates" data-text="News and updates" tabindex="0">News and updates</h2> <div class="devsite-landing-row-description"> Features and tooling to help you transition from third-party cookies. </div> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/blog/3pc-lookup?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="third-party-cookie-site-compatibility-lookup-tool" data-text="Third-party cookie site compatibility lookup tool" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/blog/3pc-lookup?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Third-party cookie site compatibility lookup tool </a></h3> <div class="devsite-landing-row-item-description-content"> Chrome is providing a lookup service to show how third-party cookie availability is affected by Chrome's third-party cookie grace period, and grace period opt-out configuration. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/blog/grace-period-opt-out?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> payments </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="an-opt-out-mechanism-for-the-third-party-cookie-grace-period" data-text="An opt-out mechanism for the third-party cookie grace period" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/blog/grace-period-opt-out?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> An opt-out mechanism for the third-party cookie grace period </a></h3> <div class="devsite-landing-row-item-description-content"> When a breakage report is filed at goo.gle/report-3pc-broken and meets all eligibility criteria, Chrome initiates a grace period that provides continued access to third-party cookies for a limited time. Chrome is now providing a mechanism to allow sites to opt out of the grace period for a percentage of users. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description" icon-position="left"><a href="https://developers-google-com.translate.goog/privacy-sandbox/resources/case-studies/mercado-libre?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> <div class="devsite-landing-row-item-icon-container" background="grey" foreground="google-blue" size="medium"> <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> newspaper </div> </div></a> <div class="devsite-landing-row-item-body"> <h3 id="privacy-sandbox-at-mercado-libre" data-text="Privacy Sandbox at Mercado Libre" class="hide-from-toc no-link" tabindex="0"><a href="https://developers-google-com.translate.goog/privacy-sandbox/resources/case-studies/mercado-libre?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"> Privacy Sandbox at Mercado Libre </a></h3> <div class="devsite-landing-row-item-description-content"> Learn how Latin America's leading ecommerce platform Mercado Libre made their journey to reduce reliance on third-party cookies and protect the privacy of their customers. </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-1-up devsite-landing-row-cta" background="blue" header-position="top"> <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom"> <div class="devsite-landing-row-item-description"> <div class="devsite-landing-row-item-body"> <h3 id="report-issues-with-third-party-cookies-and-get-help" data-text="Report issues with third-party cookies and get help" class="hide-from-toc no-link" tabindex="0"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://goo.gle/report-3pc-broken"> Report issues with third-party cookies and get help </a></h3> <div class="devsite-landing-row-item-description-content"> We want to ensure we capture the various scenarios where sites break without third-party cookies to ensure that we have provided guidance, tooling, and functionality to allow sites to migrate away from their third-party cookie dependencies. If your site or a service you depend on is breaking with third-party cookies disabled, you can submit it to our breakage tracker. </div> <div class="devsite-landing-row-item-buttons"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://goo.gle/report-3pc-broken" class="button ">Report an issue</a> </div> </div> </div> </div> </div> </div> </section> </div> <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://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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