I was having a twitter argument the other day with someone who maintained that they never really come across any Microsoft systems in their work and who would be crazy enough to use Windows Server. I've worked in orgs from 100 people to 10,000 and it's always Active Directory and MS all the way through with odd few Ubuntu or RHEL servers for a internal application.
The only Windows systems I've seen in over 15 years were to run Active Directory over 10 year ago (and not since), my personal gaming desktop (which no longer runs Windows) and GitHub runners for cross compilation.
There's plenty of Microsoft out there, but there's an entire, thriving universe where Microsoft is completely irrelevant.
