In this video Deepu Thomas lays down the real scoop behind the Windows Subsystem for Linux. There was a lot of speculation surrounding how this feature actually worked so I decided to find out. This architectural overview gets into exactly how an operating system separates functionality into user and kernel mode. Deepu then uses that understanding to show how this new subsystem works in that context. The whole explanation is thoroughly enlightening and often stretched my understanding of how the underlying operating system works.
There's a ton to learn on this topic! In addition to our Channel 9 Live coverage at //BUILD 2016 and we have a number of deep dives that really get into how the feature works at an operating system level: