It's a spectrum. You can already use (some) WinRT features on desktop/console win32 apps, even unsandboxed[0]. You can use UWP XAML in win32 desktop apps with

It's a spectrum. You can already use (some) WinRT features on desktop/console win32 apps, even unsandboxed[0]. You can use UWP XAML in win32 desktop apps with a sandbox, and you'll probably be able to use it without a sandbox when WinUI 3 comes out (currently in early preview, they'll probably have a couple sessions about it at Build) [0] some APIs require your app to have an identity though, and you need the sandbox for that