What does an AWS Region consist of?

An AWS Region consists of two or more availability zones. This structure is designed to enhance fault tolerance and maximize uptime, as availability zones are distinct locations within a region that are engineered to be isolated from failures in other zones. They provide redundancy and high availability for applications and data hosted within that region, enabling businesses to build highly reliable systems.

In this context, each availability zone has its independent power, cooling, and physical security to ensure that operations can continue even if one zone experiences issues. By utilizing multiple availability zones, users can deploy applications that are resilient to failures, making the architecture much more robust.

Regions are strategically chosen based on geographical considerations to provide performance, data sovereignty, and compliance requirements. The combination of multiple availability zones within a single AWS Region contributes significantly to ensuring high availability and durability for customers’ services and applications.