Microsoft has put the kibosh on "Project Astoria." This plan was going to allow developers to port over Android apps to Windows 10 devices including Windows 10 Mobile, using bridge tools. "Project Astoria" was introduced last year at the 2015 Build conference alongside "Project Islandwood." The latter allows developers to port over iOS apps to Windows 10 devices (including Xbox and PCs). "Project Islandwood" is still alive.
But Microsoft decided that having two Windows Bridges focused on moving apps from mobile operating systems to Windows 10, was one too many. The company is suggesting that with Project Astoria dead, developers take a look at the iOS Bridge instead. Microsoft also pointed out that it recently acquired Xamarin. The latter's approach will allow developers "to share common app code across Windows, iOS, and Android apps while still delivering fully-native experiences for each of the platforms."
"We received a lot of feedback that having two Bridge technologies to bring code from mobile operating systems to Windows was unnecessary, and the choice between them could be confusing. We have carefully considered this feedback and decided that we would focus our efforts on the Windows Bridge for iOS and make it the single Bridge option for bringing mobile code to all Windows 10 devices, including Xbox and PCs. For those developers who spent time investigating the Android Bridge, we strongly encourage you to take a look at the iOS Bridge and Xamarin as great solutions."-Microsoft
Microsoft does have a couple of tools for those developers who write for the desktop, such as The Web Bridge and "Project Centennial." Microsoft also hopes to bring everyone up to date at the 2016 Build developer conference, which will be held in San Francisco from March 30th through April 1st this year.