There are a multitude of cases of operations which need to be performed before and after specific actions in K8s. It depends on the resource, operator, operational changes, state, bugs, order of operations, and more.

Cleanups: I want to do a `helm uninstall` and have all the manifests go away at once instead of looking around for N different resources.

Hooks: I want to apply my database migrations and populate the database with static datasets before I deploy my application, without having my CI connect to the database cluster (at places I've worked, the CI cluster and K8s cluster were completely separate).