Which statement accurately differentiates an AWS region from an availability zone?

An AWS region is indeed large consisting of multiple availability zones, while an availability zone is a distinct data center or group of data centers within that region. The correct statement highlights that an availability zone is designed to be isolated from failures in other availability zones, providing redundancy and stability. This isolation helps prevent issues in one zone from impacting other zones, allowing for greater fault tolerance and high availability of applications.

AWS regions are geographical areas that may contain one or more availability zones, enabling users to deploy applications and services in locations that suit their specific needs, be it in terms of latency, data residency, or compliance requirements. Each zone within a region is interconnected with high-bandwidth, low-latency links, supporting seamless scaling and data synchronization.

The other statements do not accurately describe the relationship between regions and availability zones, as they suggest inversions or limitations in the structure of AWS’s cloud infrastructure.