us-east-1 was 11 different datacenters last time I bothered to check.
us-west-2 by comparison is two datacenters. The reason west-1 and west-2 exist is because they are geographically diverse enough to prevent low latency inner-connections (and also have dramatically different power costs so they bill differently).
then how come when east goes down, it always seems to take down all the AZs in the region, never just one AZ? As long as the region fails like a single datacenter, i'll think of it like a single datacenter.
us-east-1 was 11 different datacenters last time I bothered to check.
us-west-2 by comparison is two datacenters. The reason west-1 and west-2 exist is because they are geographically diverse enough to prevent low latency inner-connections (and also have dramatically different power costs so they bill differently).