The area that I focus on the most is Endpoint Protection. We use Intune to build custom devices and configurations, to push out group policies, and do quite a bit with Azure Log Analytics.
I'm writing a script from a multi-home deployment of the MMA Agent. The use case varies a lot, depending on the clients' needs. Our clients tend to be pretty big companies. The smallest client I have is about 600 people. Our biggest client is about 50,000.