How to automate complete azure kubernetes environment?

We have azure kubernetes cluster and database managed service in postgres azure flexible servers.

Created terraform templates to automate environment setup. But there is no option in azure devops to spin up a new cluster build job. So kept a single pipeline at present which just manages a single cluster

After that, need to manually create a service connection to this cluster which can be used in release pipelines added.

Is there anyway to automate the service connection creation part also?

And is there any architecture you can suggest for the automation