The two main areas that come to mind:
1. Homelab administration. So nice to be able to delegateupdates and configuration.
2. Custom software. Exactly what I need it to be. Just-in-time software over just-in-case software.
I've found it so-so at automating workflows ("do this for me…") and brilliant at refining and writing scripts to streamline workflows ("write a script that will do this for me…").