[dangoodmanUT]

I've not seen any evidence that multi-AZ is more resilient. There's no history of an entire AZ going down that doesn't affect the entire region, at least that I can find on the internet within 15 minutes of googling.

[playingalong]

Do you mean S3 or all services?

If all services, then things like whole or most of a single AZ being borked happens fairly often.