There is a nearly zero percent chance that the game developers are also cloud experts

Well yeah, that's why you would put some cloud experts on the project besides the game devs if you're doing things like this. It's not just game developers working on the game.

Doesn't even have to be people feom the Azure team. Microsoft has plenty of resources to teach someone to be a cloud expert in other branches, they even offer certifications for outside people, surely they can manage a few of their own.