I've done a few of those RHEL/CentOS/Ubuntu moves myself, and even though it was a pain I'm still somewhat impressed over how painless the actual move was when I had good documentation and also still terrified of what it feels like to try to transition undocumented boxes.

I dislike windows and the M$ ecosystem but as far as server management for undocumented servers it's much easier to deal with them than for Linux stuff. For an undocumented Windows server, you send out an email, wait 2 weeks, shut it down and listen for the screams.

For an undocumented Linux server, you send out an email, wait 2 weeks, prep the fire extinguishers, batten the hatches, and wait for the mob of angry villagers to storm the DC with pitchforks because thanks to you their print server for their paper checks is now printing in Klingon and it can't be fixed without resurrecting the guy that wrote the software 6 days before he died of terminal terminal disease.

so what you're saying is nothing business critical runs on Windows?

No. Just that Windows servers are much easier to navigate to find what files and systems are running.

With Linux systems, sure, you can check chron and top and find what is running and where it is but it's a bit more unwieldy than the windows GUI, plus you don't always have a full list of the file and folder permissions and getting a full list of those requirements for whichever softwares are accessing them.

Oh, I see, that makes sense.