Final answer:
Regions are physical locations in AWS consisting of multiple availability zones. Availability zones are data centers within a region that provide fault tolerance and redundancy.
They ensure high availability for applications deployed in AWS.
Step-by-step explanation:
Regions in AWS are physical locations in the world that consist of multiple availability zones (AZs). Each region is a separate geographic area and is isolated from other regions.
AZs are essentially data centers within a region that are spaced apart to ensure redundancy and fault tolerance.
Regions and AZs are designed to provide high availability and fault tolerance for applications deployed in AWS.
By distributing resources across multiple AZs in a region, AWS ensures that if one AZ or data center were to experience a disruption, the other AZs would continue to function.
For example, in the Asia Pacific (Mumbai) region, there are three AZs: ap-south-1a, ap-south-1b, and ap-south-1c.
These AZs are located in separate buildings, power grids, and flood plains to minimize any possible dependencies and single points of failure.