A new k8s cluster was created and planned to replace the current setup. Instead of ad-hoc scripts, conventions and associated documentation, it relies on a declarative description

Gitops!

It seems that they are using fluxcd, just like I am, to manage their kubernetes cluster.

I really like it as a solution, as you just edit configuration files, push then to git, and then your kubernetes cluster changes. Deploying an app is as simple as adding a file, and deleting an app involves deleting that file.