Here's a few examples of policies/needs that I've seen companies run up against at scale. K8s does a great job solving them.

* Understanding which workloads share a node's memory/CPU, and isolating certain workloads for security reasons

* Running specific workloads on specific instance types (e.g. with GPU or extra CPU)

* Configuring network policy between workloads

* Airgapping certain workloads

* Setting priority levels for different workloads, so some scale more rapidly while others have to wait for a new node to be provisioned

* Customized scaling behavior (e.g. based on the depth of a queue or latency metrics)

* Multi-region support for DR

I could probably go on :)