I like to think that Microsoft is trying to run GitHub in Windows in their Azure cloud. And on the fact that every time GitHub is down I think of "someone updated the Windows Servers GH runs on and had to reboot everything".

While I'm 99% sure it is not true, it makes me sleep better at night. And giggle a little when it goes down.

They definitely do something with Azure. Stuff related to GitHub action runs hosted on something.windows.net, which I believe is azure.