It blew my mind when I learned you can set up a laptop as a second monitor on Windows 11
This is possible because of the "Project to this PC" feature available on Windows for devices equipped with Miracast ...
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Wireless Display Adapter
A Miracast-based device from Microsoft that plugs into a TV, projector or monitor via HDMI and USB. Starting with Windows 8, the Wireless Display Adapter (WDA) lets a Miracast-enabled Windows PC ...
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DirectX Legacy Overlay Planes don’t work on Windows 11/10
Miracast is a screen-mirroring protocol that lets you broadcast anything from an Android device or recent Intel computer to your TV. Whatever you see on the small screen will appear on the big screen.