AWS is a Cloud Computing platform offered by Amazon that provides a wide range of cloud computing services around the world. AWS has a global infrastructure that consists of a huge network of AWS Regions, Availability Zones, Edge Locations/Points of Presence, and Data Centers to provide reliable and low-latency services to customers.

As of date, we have 31 Launched Regions [Each with multiple Availability Zone], 99 Availability Zone, and 450+ Points of Presence [400+ Edge Locations and 13 Regional Edge Caches].

You can see the current data by visiting AWS Global Infrastructure webpage.

# AWS REGIONS

AWS has regions all around the world. A region is a separate geographic area where a cluster of data centers is isolated from each other to provide fault tolerance and high availability. Every region has a unique name for example - us-west-1 or eu-east-3. Most of the AWS services are region-scoped.

# Things to keep in mind while selecting a "Region"

  1. Adherence: Data never leaves a region without explicit permission.
  2. Availability of services within a specific region.
  3. Proximity to customers.
  4. Service Pricing differs in different regions.

# AVAILABILITY ZONES(AZ)

Each region consists of at least 3 and at most 6 availability zones. They are also uniquely named for example ap-southeast-2a or ap-southeast-2b or maybe ap-southeast-2c and so on. Each AZ can have one or more discrete data centers which are separated so that they're isolated from disasters.

If something happens to a particular data center, won't affect the others in an availability zone. They are connected with low latency networking and high bandwidth and therefore form a network.

# AWS Points of Presence (Edge Locations)

Edge locations are distributed points of presence (PoPs) located in multiple cities around the world that are used to cache and deliver content to users with low latency.

Here is a pictorial representation of the GLOBAL INFRASTRUCTURE OF THE AWS:

I hope it's clear to you all.

Thank You, Folks🙌