Where are AWS EC2 Availability Zones exactly?

Question

I am trying to create a server with the lowest possible latency for my target audience. I get the difference between regions and Availability Zones (I think). It sounds like the Availability Zones are in different cities. Where are they exactly?

Answer 1

You can assume that all availability zones in the same region have the similar latency. (as they are all very close). Also as far as I know not necessary the availability zones are the same for all users. (i.e. us-east-1a can be different datacenter for different users)