I work at Microsoft and we have a lot of big services that run on Windows Servers. There is orchestration with a system called "Service Fabric" that schedules the applications and handles upgrades sortof like kubernetes does, but for the most part there are no containers involed.
I did a POC using service fabric years ago but I have not really read anything about it since. My company at the time was unable to give me three servers per tenant, so I had to drop it - but it's good to hear it's still being used.
