One Windows Kernel

 This is fantastic that Microsoft has not ditched efforts to promote Windows kernel to developers but the best way to do this is providing access to source code. Apple does this with the Darwin/XNU kernel and it doesn't hurt their business model. The source code is the best way to promote Windows kernel to university students and those who make some research on OS internals. Windows kernel is the last closed source major OS kernel and I blame this for the Windows core/Windows IoT failure . Instead of providing a platform builder (like it was with Windows CE) where a kernel and drivers can be tuned and rebuilt for a custom hardware Microsoft ventured to provide a binary closed source system for a tiny subset of proprietary hardware and lost the momentum so developers abandoned the platform.