##### Availability Zone Think of an availability zone (AZ) as a _data center_. Specifically, it is one or more discrete data centers — each with redundant power, networking, and connectivity -- housed in separate (but close) facilities ##### Region A Region is a physical location in the world/geographical area that consists of 2 (or more) Availability Zones. ##### Edge locations Edge locations are endpoints for AWS that are used for caching content. Typically, this consists of [[CloudFront]], Amazon’s content delivery network (CDN). **There are many more edge locations than Regions.** Currently, there are over 215 edge locations. ___ ###### More info [Regions and Availability Zones](https://aws.amazon.com/about-aws/global-infrastructure/regions_az/)