AWS Region is a physical location around the world with a cluster data centers. Each group of data center is called an Availability Zone. Each AWS Region consists of a minimum of three, isolated, and physically separate AZs within a geographic area.
An Availability Zone (AZ) is one or more discrete data centers with redundant power, networking, and connectivity in an AWS Region. AZ's are very useful for high availability & fault tolerance.
Edge Locations / Points of Presense¶
To deliver content to end users with lower latency, Amazon CloudFront uses a global network of 450+ Points of Presence and 13 regional edge caches in multiple cities / countries. This is done by partnering with telecom carriers globally.
Choosing an AWS Region¶
Factors Impacting choice of AWS Region
Proximity to end users
Availability of service within a region