Availability Zones & Regions
What are AZs & Regions?
AWS has 16 Regions and 44 Availability Zones.
A Region is a geographically distinct area—for example, the west coast of the USA.
Availability Zones are datacenters within a region. The availability zones are fault-tolerant between each other. Each Availability Zone (AZ) has its own power and is independent of other AZ within that region.