As part of a fruitless bid to get businesses to upgrade to Windows 11, Microsoft on Friday provided details about its own mass upgrade. Believe it or not, it went great!

“Microsoft’s upgrade to Windows 11 is largely considered the smoothest we’ve ever had,” Microsoft’s Lukas Velush explains. “The Microsoft Digital Employee Experience team was able to upgrade 190,000 employee devices in just five weeks. We learned a lot, so I’m sharing our learnings with you to help with your deployment journey.”

Microsoft’s success at rolling out its own product to its own employees can be tied to several factors, Velush says: there were far fewer app compatibility issues than in the past because Windows 11 is identical to Windows 10 internally, it didn’t build out a lot of different disk images, and the delivery processes and tools needed, which are identical to those for Windows 10, were “greatly improved during the rollout of Windows 10.”

“We count our upgrade to Windows 11 as a strong success story,” Velush concludes. “We had no increase in support tickets, we had broad adoption across the company, and it was our fastest deployment in company history. We hope that sharing our story helps you tackle your Windows 11 upgrade.”