Comment by nijave

The one place I worked that used it - got a bunch of free credits for signing up - had some license agreement for some Microsoft service (Teams Oath App or something similar) where a certain percentage of the infra had to be hosted on Azure

Don't remember the details of #2, just that they were a "Microsoft partner" of some sort which was beneficial to integrating with the Microsoft apps the product depended on and appearing as an app in the marketplace. The company built software that ingested IM/chat data from corporations (Teams and I think something older)