[nickm12]

I work at Amazon. The internet would be in trouble. I know very little about the fulfillment side of things, but I would expect things to stop there pretty much immediately. There is of course automation, robots, etc. but also many people in the loop and once they vanish I'd expect things to enter some kind of passive failure mode. Hopefully these failures would be isolated from the rest of the services.

The more interesting question is how long AWS and retail services would continue running and how they would fail. I don't think anyone could say. All people worldwide vanishing in an instant isn't a realistic scenario to plan for—if it happens, then the world has bigger problems and in any case, who would be around to execute the recovery plan?

Still for the sake of the thought experiment...I'm assuming in this scenario the world sees fit to keep supplying the data centers with power and other utilities, but no one has access to the buildings, tries to get in, bomb them etc. In this case, I would expect things to fail gradually, then suddenly and catastrophically, in the period of a few days to a few months. Failure should happen mostly independently by availability zone.