

Astoria Project
Initially, Microsoft undertook various projects to port software from different platforms to W10M. They referred to these projects as software 'bridges,' with the aim of helping developers easily port their applications from Windows, iOS, and Android to W10M.

Subsequently, Microsoft decided to cancel Astoria
Unfortunately for enthusiasts and Windows Phone users who always hoped for more apps for their smartphones, Microsoft chose to cancel Project Astoria before the official release of W10M in 2015.We have received numerous feedback stating that using two Bridge technologies to bring code from mobile operating systems (Android and iOS) to Windows is unnecessary, and the choice between them can be confusing


Source: AndroidAuthority