It seems a bit nit-picky, but AWS has ~18 commercial regions, but far more datacenters. It's availability zone that's a data center (more or less), not a region

It seems a bit nit-picky, but AWS has ~18 commercial regions, but far more datacenters. It's availability zone that's a data center (more or less), not a region. So for each region you end up with 3 to 5 data centers or something like that.