What Is an AZ?

AZ

An AZ is a physical region where resources use independent power supplies and networks. AZs are physically isolated but interconnected through an internal network.

There are multiple AZs in each region. If one AZ becomes faulty, other AZs in the same region continue to provide services.

AZs in the same region can communicate with each other through an internal network.

Selecting an AZ

You can select an AZ when you purchase an ECS. Note that you cannot change the AZ after you purchase the ECS.