One problem which we've seen before is: If a large percentage of AWS infrastructure goes down, the customers don't just quietly suffer. Instead they scramble to

One problem which we've seen before is: If a large percentage of AWS infrastructure goes down, the customers don't just quietly suffer. Instead they scramble to try and launch infrastructure in other zones or regions, which creates a cascading series of load spikes throughout the AWS system. AWS is a fascinating science experiment. Pity about the websites, though.