https://www.pcworld.com/article/2464497/new-windows-app-for-everyone-whats-inside.html
Yesterday, Microsoft announced in a blog post that Windows App has finally been released to the general public and is available for Windows, macOS, iOS, iPadOS, and web browsers.
In a nutshell, Windows App is a “unified experience” that lets you securely connect to a Windows device from any other supported device. It’s a simplified way to connect via Windows 365, Azure Virtual Desktop, Remote Desktop, Remote Desktop Services, or Microsoft Dev Box. That means on most platforms you’ll end up replacing whatever remote desktop app you’re using with Windows App.