AWS went out Tuesday—and so did half the internet. AWS is more reliable than most people’s datacenters and has all sorts of great features your average corporate IT infrastructure lacks. Yet utter failure visited S3 on the East Coast and lasted for a whopping 11 hours.
The major cloud vendors really, really want you to depend on them. Sure, you can hedge your bets by using multiple cloud regions, but ultimately this is infrastructure you don’t control and in many cases don’t really understand. This is an age-old problem now ported to the cloud.