<p>I wanted to know what is the difference between a Replication Controller and a Deployment within Kubernetes (1.2). Going through the getting started document (<a href="http://kubernetes.io/docs/hellonode/">http://kubernetes.io/docs/hellonode/</a>) I have created a deployment - but it doesn't show up on the web UI.</p>

<p>When I create apps from the web UI - they are created as replication controllers. Functionally though, they seem very similar (they both manage pods and have services).</p>

<p>So - what is the difference and when should I use each?</p>

<p>Deployments are a newer and higher level concept than Replication Controllers. They manage the deployment of Replica Sets (also a newer concept, but pretty much equivalent to Replication Controllers), and allow for easy updating of a Replica Set as well as the ability to roll back to a previous deployment.</p>

<p>Previously this would have to be done with <code>kubectl rolling-update</code> which was not declarative and did not provide the rollback features.</p>

<p><strike>Kubernetes Dashboard has not yet been updated to support Deployments, and currently only supports Replication Controllers (see <a href="https://stackoverflow.com/questions/37305133/deployments-not-visible-in-kubernetes-dashboard/37305814#37305814">Deployments not visible in Kubernetes Dashboard</a>).</strike></p>

<p>EDIT: The dashboard now supports Deployments.</p>
