You know Proton, and how the various versions have different compatibility? And some games might prefer a specific Proton? This stuff is a… “Linux base” that developers can target, so for example if I make a game tomorrow and target a specific version, it’ll run tomorrow like in 20 years, because no matter how the actual system will change, that “Linux base” I targeted will still be there.

Comments here are fun, seem a 3 way split between people thinking it’s GeForce Experience, game stream, and finally the actual cloud streaming service running your own Steam games.