Microsoft has abandoned its “Astoria” project to allow Android apps to run essentially unmodified on Windows. <http://arstechnica.com/information-technology/2016/02/microsoft-confirms-android-on-windows-astoria-tech-is-gone/> Nevertheless, one interesting by-product of this effort remains: Tucked away inside the Windows 10 Insider Preview is a Linux-like operating system. The big question is what Microsoft is actually going to do with it.