Kubernetes is just one piece of the puzzle. But it is a very important piece that manages several important tasks.
It tracks the state of the cluster, creates and manages networking rules, controls which nodes your containers run in, and monitors the containers. It is an API server, scheduler, and a controller. That is why it is called “Production-Grade Container Orchestration,” because Kubernetes is like the conductor of a manic orchestra, with a large cast of players that constantly come and go.