Re: Oh those Russians!
Really, wake up. MSFT of 2020 is not MSFT of 1995. There's a huge amount of support for Open Source in Azure, and throughout MSFT in general. The MSFT IT department even supports MacBooks (I'm typing this on my MSFT provided MacBook, and no, it isn't running Windows) and iPhones.
Disclaimer -- I've worked there since 2018.