https://docs.aws.amazon.com/ram/latest/userguide/working-with-az-ids.html https://docs.aws.amazon.com/ram/latest/userguide/working-wit... “To identify the loca

https://docs.aws.amazon.com/ram/latest/userguide/working-with-az-ids.html https://docs.aws.amazon.com/ram/latest/userguide/working-wit... “To identify the location of your resources relative to your accounts, you must use the AZ ID, which is a unique and consistent identifier for an Availability Zone. For example, use1-az1 is an AZ ID for the us-east-1 Region and it is the same location in every AWS account” So each separate AWS account will have a different AZ name that maps to use1-az1, but use1-az1 is a region-wide constant.