How does Google Stadia or other gaming streaming services work?

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How does Google Stadia or other gaming streaming services work?

In: Technology

The game, is run normally on a machine in one of Google’s (or whoever’s) data-center. Your computer sends it your inputs (so controller/mouse movements and button presses which are fed into the game. The server then sends you the video stream of the game, just like youtube or netflix does.

The big challenge is getting the response time (so the time between you pressing a button and the video of the game reacting to your input) low enough for the game to be playable.