https://www.cnbc.com/2019/03/19/google-stadia-new-streaming-game-service-announced.html

Google on Tuesday announced its plans to upend the $140 billion gaming industry dominated by Sony and Microsoft with a new streaming service called Stadia that allows people to play high-end games without purchasing expensive consoles or computers. Google said this is a "game platform for everyone."

All of the legwork to render those games is done in Google's cloud.