Kubernetes (K8s)

The software that makes you feel like a genius when your pods are running and an absolute fraud when they’re in CrashLoopBackOff. Kubernetes (K8s) is an open-source container orchestration system originally designed by Google, now maintained by the CNCF.

It handles the thankless work of scheduling containers across a cluster, scaling them up and down, rolling out updates without downtime, and restarting things when they inevitably crash. Think of it as the ultimate babysitter for your microservices — except this babysitter has its own 200-page manual.

Why it matters: If you’re running more than a handful of containers, you need something to manage them. Kubernetes is the industry standard, for better or worse.