[oso2k]

k8s is really just a lot of Linuxisms put together in semi-novel, intelligent, and pluggable way. That list of features u/orf posted is all possible with plain Linux. You can start really minimal k8s, almost like plain containers on Linux. But going from one machine and one container/workload to literally 100k containers, 100s of machines and workloads working together in secure ways is really difficult without the organization that k8s APIs, interfaces, automations, and concepts impose on Linux.

I've helped an 80% new team survive Black Friday and make $10M revenue in 3 hours in a 6 week engagement. I helped a 100% new team build their first CI/CD system to build/run/test their aircraft embedded system in containers. I’ve helped credit card companies scale dozens of clusters to 150k services under management backed by over 250k containers, per cluster.

And it’s the same code that will run on a 10 year old PC or RPi3B as a single instance. It really is a story about the power of Linux.