Microsoft allows cross platform play

NET Core by Microsoft - New step towards cross-platform software development

Xbox Play Anywhere: Buy the game once, play on Xbox One and PC (multiplayer too)

How to Play Minecraft Cross-Platform: XBox, PC, PS5 & More

Microsoft Says Cross-Play Is Unique Value Of Theirs, But It Just Isn't True

Xbox One and PlayStation 4 cross-play is not a lost cause, but don't expect it any time soon - MSPoweruser

With the inevitable widespread adoption of cross play, Microsoft should bring Skype to PS4 so we have a reliable way of cross platform communication : r/xboxone

What is .NET MAUI? - .NET MAUI

An Epic cross-play journey: Paragon, Fortnite, and what comes next - Epic Online Services

A Small Percentage Of Skyrim's Sales Were On Non-Microsoft Platforms; Its Sequel Will Be Microsoft Exclusive