The interface is astonishingly Windows'ish with millions of knobs to turn and not as stable as you want. (Resource usage metrics returned errors for a while on me.)
You will need time to get used to it. I even use AWS for a Windows instance.
If it's as cheap and powerful as AWS then I'm on board too. But I doubt it is, Amazon's got it down to an intricate science that seems like it can't be beat.
Depending on specifics (obviously), Azure is quite competitive with Amazon on pricing, and extremely competitive on "power". Your mileage will of course vary, but the interesting thing about Azure versus AWS is (surprising to some) Azure tends to use more "open standards" versus AWS' proprietary solutions. (Two examples off the top of my head: Azure supports Docker and Kubernetes directly rather than the Elastic TLAs' own in house container models and container orchestrators. Azure's most used in-memory cache is Redis.)
Fine if you just need PaaS app + RDB though.