Android TV is an operating system based on the Android platform, developed by Google for use in projectors, televisions, and other digital media players. It is designed to provide a more immersive television experience, with an interface optimized for use with a remote control and support for streaming video and music, as well as gaming and other apps.
It includes a built-in Google Assistant and allows for installing apps from the Google Play Store, including popular streaming services such as Netflix, Hulu, and YouTube, as well as games and other apps.
Android TV also supports Google Chromecast, allowing users to stream content from their mobile devices to a projector. Be aware that deciding to include any premium streaming service, like Netflix, is ultimately up to each projector manufacturer.