Everything we learned led us to Deployments. Pods must not be created directly, but through ReplicaSets which, similarly, must not be created directly, but through Deployments. They are the objects that allow us not only to create the ReplicaSets and Pods, but that can also be updated without producing any downtime (when applications are designed accordingly). We combined Deployments with Services so that Pods can communicate with each other, or can be accessed from outside a cluster. All in all, we have everything we need to release our services to production. That is not to say that we understand all the crucial aspects of Kubernetes. We're not even close to that point. But, we do have almost everything we need for running some types of applications in production. What we're missing is networking.
Before we enter the next stage of our knowledge seeking mission...
