What is Knative?

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<article> <section class="dx-band dx-pt-6 dx-pb-0"> <div class="dx-container dx-flex-col lg:dx-flex lg:dx-flex-row xl:dx-gap-3 lg:dx-justify-between dx-mb-2 lg:dx-mb-8"> <div class="lg:dx-col-2 dx-mb-3 lg:dx-mb-0"> </div> <div id="rhdc-article-hero" class="rhdc-article-hero lg:dx-col-6">  <div class="rhdc-article-hero-breadcrumbs">  <ul class="rh-navigation-link--component" data-rh-nav-type="breadcrumb" ><li class="rh-navigation-link-container"><a class="rh-navigation-link-item" href="/en/topics" title="Topics" > Topics </a></li><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="11" height="11" viewBox="0 -18 1024 1055"><path d="M810.642 511.557c0 8.905-3.447 16.776-10.284 23.613L322.31 1013.216c-6.835 6.837-14.706 10.284-23.61 10.284s-16.776-3.447-23.613-10.284l-51.303-51.303c-6.837-6.837-10.284-14.707-10.284-23.612s3.447-16.775 10.284-23.61L626.972 511.5 223.784 108.31c-6.837-6.835-10.284-14.706-10.284-23.61s3.447-16.776 10.284-23.613l51.303-51.303C281.924 2.947 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class="rhdc-article-hero-headline dx-mb-4 dx-mt-4">  <div class="rh-band-header--component" ><h1 class="rh-band-header-hero-headline" >What is Knative?</h1> </div> </div> <div class="rhdc-article-hero-front-matter">  <div class="rh-front-matter--component"><div class="rh-front-matter-wrapper" data-rh-layout="inline-horizontal"><div class="rh-front-matter-metadata"><span class="rh-front-matter-metadata-publish-date">Published <span> January 8, 2019</span></span><span class="rh-front-matter-metadata-separator">•</span><span class="rh-front-matter-metadata-readtime" for="article-contents" data-rh-hidden="sm"><em class="placeholder">2</em>-minute read</span></div><pfe-clipboard class="rh-front-matter-share" role="button" tabindex="0"><span slot="text">Copy URL</span></pfe-clipboard></div></div></div> </div> <div class="lg:dx-col-3"> </div> </div> </section> <section class="dx-band dx-pt-0 rhdc-article-body" id="rhdc-aside-promo"> <div class="dx-container dx-flex-col lg:dx-flex lg:dx-flex-row xl:dx-gap-3 lg:dx-justify-between"> <div class="lg:dx-col-1 lg:dx-col-2 dx-mb-6 lg:dx-mb-0"> <pfe-jump-links-nav id="article-nav" autobuild offset="120" sr-text="Jump to section" ></pfe-jump-links-nav> </div> <div class="rhdc-article-body--content lg:dx-col-6"> <pfe-jump-links-panel scrolltarget="article-nav" data-rh-layout="tall-stacked" pfelement="" class="PFElement" type="content">  <div class="rh-group--layout" data-rh-layout="stacked" ><div class="rh-group-body" data-rh-layout="min-stacked" ><header class="rh-standard-header--component" ><div class="rh-standard-header-container"><h2 class="rh-standard-header-headline-medium pfe-jump-links-panel__section" id="overview" nav-label="Overview" >Overview</h2></div></header><div class="rh-generic--component" ><p><a href="https://cloud.google.com/knative/">Knative</a> (pronounced <em>kay-nay-tiv</em>) is an <a href="/en/topics/open-source/what-is-open-source">open source</a> community project which adds components for deploying, running, and managing <a href="/en/topics/cloud-native-apps/what-is-serverless">serverless</a>, <a href="/en/topics/cloud-native-apps">cloud-native</a> applications to <a href="/en/topics/containers/what-is-kubernetes">Kubernetes</a>. The serverless <a href="/en/topics/cloud-computing">cloud computing</a> model can lead to increased <a href="/en/products/developer-productivity" data-entity-type="node" data-entity-uuid="82675b9b-602b-4792-8f7d-ed87edad33ec" data-entity-substitution="canonical">developer productivity</a> and reduced operational costs.</p><p><rh-cta variant="primary"><a href="/en/technologies/cloud-computing/openshift/serverless" data-analytics-linktype="cta" data-analytics-text="Learn more about Red Hat OpenShift Serverless">Learn more about Red Hat OpenShift Serverless</a></rh-cta></p></div></div></div>  <div class="rh-group--layout" data-rh-layout="stacked" ><div class="rh-group-body" data-rh-layout="min-stacked" ><header class="rh-standard-header--component" ><div class="rh-standard-header-container"><h2 class="rh-standard-header-headline-medium pfe-jump-links-panel__section" id="what-are-the-benefits-of-knative" nav-label="What are the benefits of Knative?" >What are the benefits of Knative?</h2></div></header><div class="rh-generic--component" ><p>Knative eliminates the tasks of provisioning and managing servers. This lets developers focus on their code without having to worry about setting up complex infrastructure. This benefit is extended even further if entire application components are incorporated from a third party through Backend-as-a-Service (BaaS), rather than being written in-house.</p><p>The Knative serverless environment lets you deploy code to a Kubernetes platform, like <a href="/en/technologies/cloud-computing/openshift">Red Hat OpenShift</a>. With Knative, you create a service by packaging your code as a container image and handing it to the system. Your code only runs when it needs to, with Knative starting and stopping instances automatically. Resources aren’t consumed unless your code needs to do something. Operations costs can be reduced—you can pay for cloud-based compute time as it’s needed instead of running and managing your own servers all the time.</p><p><rh-cta><a href="/en/resources/openshift-container-platform-datasheet" title="resources | Red Hat OpenShift Container Platform: Kubernetes for rapid innovation - HTML" data-analytics-linktype="cta" data-analytics-text="Choose the right hybrid cloud foundation for building and running containerized apps">Choose the right hybrid cloud foundation for building and running containerized apps</a></rh-cta></p></div></div></div> <div class="rhdc--inline-promo" data-rh-mbox="inline-promo">  <div class="rh-card--layout rh-promo-article" data-rh-promo=inline data-rh-border-radius=none data-rh-background="gray" data-rh-theme="light" data-rh-bg-align="cover" data-rh-layout="fit-content-33" data-rh-border="top-bottom"><div class="rh-card-content" data-rh-layout="stacked" ><div class="rh-group--layout" data-rh-layout="stacked" ><div class="rh-group-body" data-rh-layout="min-stacked" ><div class="rh-band-header--component" data-rh-align=left ><h2 class="rh-band-header-subsection-headline" id="rh-m16hw">Red Hat resources</h2></div></div></div></div><footer class="rh-card-footer" ><div class="rh-group--layout" ><div class="rh-group-body" data-rh-layout="min-stacked" ><span class="rh-cta--component" data-rh-cta-type="secondary" ><a class="rh-cta-link" href="/en/resources" title="Keep reading" data-analytics-linkType="cta" data-analytics-text="Keep reading" data-analytics-category="Inline promo | Red Hat resources" >Keep reading<span aria-hidden="true"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path d="M31.58 18.24a.64.64 0 0 0-.14-.68l-9-9c-.56-.58-1.47.32-.88.88l7.93 7.94H5a.62.62 0 1 0 0 1.24h24.49l-7.93 7.94a.62.62 0 0 0 .88.88l9-9a.72.72 0 0 0 .14-.2Z"/></svg></span></a></span></div></div></footer></div> </div>  <div class="rh-group--layout" data-rh-layout="stacked" ><div class="rh-group-body" data-rh-layout="min-stacked" ><header class="rh-standard-header--component" ><div class="rh-standard-header-container"><h2 class="rh-standard-header-headline-medium pfe-jump-links-panel__section" id="components-of-knative" nav-label="Components of Knative" >What are the components of Knative?</h2></div></header><div class="rh-generic--component" ><p>Knative consists of 3 primary components:</p><ul><li><strong>Build</strong> - A flexible approach to building source code into containers.</li><li><strong>Serving</strong> - Enables rapid deployment and automatic scaling of containers through a request-driven model for serving workloads based on demand.</li><li><strong>Eventing</strong> - An infrastructure for consuming and producing events to stimulate applications. Applications can be triggered by a variety of sources, such as events from your own applications, <a href="/en/topics/cloud-computing/what-are-cloud-services">cloud services</a> from multiple providers, <a href="/en/topics/cloud-computing/what-is-saas">Software-as-a-Service (SaaS)</a> systems, and <a href="/en/technologies/jboss-middleware/amq">Red Hat AMQ</a> streams.</li></ul><p><rh-cta><a href="https://developers.redhat.com/topics/serverless-architecture/" data-analytics-linktype="cta" data-analytics-text="Learn how to build and deploy a serverless service to Knative at Red Hat Developer">Learn how to build and deploy a serverless service to Knative at Red Hat Developer</a></rh-cta></p></div></div></div>  <div class="rh-group--layout" data-rh-layout="stacked" ><div class="rh-group-body" data-rh-layout="min-stacked" ><header class="rh-standard-header--component" ><div class="rh-standard-header-container"><h2 class="rh-standard-header-headline-medium pfe-jump-links-panel__section" id="the-open-source-advantage" nav-label="The open source advantage" >Knative and the open source advantage</h2></div></header><div class="rh-generic--component" ><p>Knative allows serverless applications to be deployed and run on any Kubernetes platform, including <a href="/en/resources/openshift-container-platform-datasheet?intcmp=701f2000001OMH6AAO">Red Hat OpenShift Container Platform</a>. Knative installs on OpenShift using Operators.</p><p>Knative is maintained by an open source community, including companies like Red Hat, Google, and IBM in collaboration with a variety of startups. <a href="/en/topics/open-source/what-is-open-source-software">Open source software</a> limits the potential for vendor lock-in, shifting the power from IT providers to the people using it.</p><p><rh-cta><a href="/en/blog/serverless-next-phase-cloud-native-application-development" data-analytics-linktype="cta" data-analytics-text="See what Red Hat thinks about serverless and vendor lock-in">See what Red Hat thinks about serverless and vendor lock-in</a></rh-cta></p></div></div></div>  <div class="rh-group--layout" data-rh-layout="stacked" ><div class="rh-group-body" data-rh-layout="min-stacked" ><header class="rh-standard-header--component" ><div class="rh-standard-header-container"><h2 class="rh-standard-header-headline-medium pfe-jump-links-panel__section" id="red-hat-openshift-serverless" nav-label="Red Hat OpenShift Serverless" >Knative and Red Hat OpenShift Serverless</h2></div></header><div class="rh-generic--component" ><p><a href="https://www.openshift.com/learn/topics/serverless">Red Hat® OpenShift® Serverless</a> is a service based on the open source Knative project. It provides an enterprise-grade serverless platform which brings portability and consistency across hybrid and multi-cloud environments.</p><p>OpenShift Serverless can help deliver a complete serverless app dev and deployment experience by integrating apps with other OpenShift Container Platform services, like <a href="/en/topics/microservices/why-choose-openshift-service-mesh">OpenShift Service Mesh</a> and cluster monitoring.</p><p>Using Red Hat OpenShift Serverless can also make things easier for operations because it installs easily on OpenShift, has been tested with other Red Hat products, and comes with access to award-winning support.</p><p><rh-cta><a href="/en/topics/microservices/why-choose-openshift-serverless" data-analytics-linktype="cta" data-analytics-text="Learn why you should choose Red Hat OpenShift Serverless">Learn why you should choose Red Hat OpenShift Serverless</a></rh-cta></p></div></div></div> </pfe-jump-links-panel> </div> <div class="lg:dx-col-3 lg:dx-col-3 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