AWS Physical and Networking Layer

AWS Physical and Networking Layer

The AWS Cloud spans 66 Availability Zones within 21 geographic Regions around the world1



Each AWS Region provides full redundancy and connectivity to the network. Unlike other cloud providers, who define a region as a single data center, at AWS Regions consist of multiple Availability Zones (AZ) (typically 3), each of which is a fully isolated partition of the AWS infrastructure that consists of discrete data centers, each with redundant power, networking, and connectivity, and each housed in separate facilities.2

Region Table

Region Table

Availability Zones

AZ give customers the ability to operate production applications and databases that are more highly available, fault tolerant, and scalable than would be possible from a single data center. AWS maintains 64 AZ around the world and we continue to add at a fast pace. Each AZ can be multiple data centers (typically 3), and at full scale can be hundreds of thousands of servers. They are fully isolated partitions of the AWS Global Infrastructure. With their own power infrastructure, the AZs are physically separated by a meaningful distance, many kilometers, from any other AZ, although all are within 100 km (60 miles of each other).

All AZs are interconnected with high-bandwidth, low-latency networking, over fully redundant, dedicated metro fiber providing high-throughput, low-latency networking between AZs. The network performance is sufficient to accomplish synchronous replication between AZs. AWS Availability Zones are also powerful tools for helping build highly available applications. AZs make partitioning applications about as easy as it can be. If an application is partitioned across AZs, companies are better isolated and protected from issues such as lightning strikes, tornadoes, earthquakes and more.3

Edge Location

An edge location is where end users access services located at AWS. They are located in most of the major cities around the world and are specifically used by CloudFront (CDN) to distribute content to end user to reduce latency. It is like frontend for the service we access which are located in AWS cloud.4

Amazon CloudFront Infrastructure

The Amazon CloudFront Global Edge Network

To deliver content to end users with lower latency, Amazon CloudFront uses a global network of 180 Points of Presence (169 Edge Locations and 11 Regional Edge Caches) in 69 cities across 30 countries.5

Last edited by MichaelAlber .
Page last modified on Sunday May 19, 2019 22:26:50 UTC.