Let's understand the differences between a region, an Availability Zone (AZ) and an Edge Location.

A Region is a physical location in the world which consists of two or more Availability Zones (AZ's).

Currently as on November 2022, there are 30 Launched Regions

An AZ is one or more discrete data centers, each with redundant power, networking and connectivity, housed in separate facilities.

Currently as on November 2022, there are 96 Availability Zones

Edge Locations are endpoints for AWS which are used for caching content. Typically this consists of CloudFront, Amazon's Content Delivery Network (CDN)

410+ Points of Presence 400+ Edge Locations and 13 Regional Edge Cache