Microsoft will announce Xbox Live SDK at GDC 2019 to enable cross-platform play on iOS, Android, Switch, Xbox, and Windows PCs (Jez Corden/Windows Central)

Jez Corden / Windows Central:
Microsoft will announce Xbox Live SDK at GDC 2019 to enable cross-platform play on iOS, Android, Switch, Xbox, and Windows PCs  —  At GDC 2019, Microsoft is set to debut a new cross-platform development platform with the goal of bringing Xbox Live support to games on Android, iOS, Nintendo Switch, in addition to PC and Xbox consoles.

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