An AWS Region is a physical location around the world where AWS clusters data centers. Each group of one or more discrete data centers forms an Availability Zone (AZ) and multiple AZs make up a Region. Distinct Regions exist in the AWS standard partition and Govcloud An AWS partition logically and physically separates groups of AWS Regions. This provides data, network, and machine isolation from AWS Regions in other AWS partitions. An AWS Region can’t be a part of two partitions.