Points of presence - AWS Fault Isolation Boundaries

Points of presence

In addition to the AWS Regions and Availability Zones, AWS also operates a globally distributed point of presence (PoP) network. These PoPs host Amazon CloudFront, a content delivery network (CDN); Amazon RouteĀ 53, a public Domain Name System (DNS) resolution service; and AWS Global Accelerator (AGA), an edge networking optimization service. The global edge network currently consists of over 410 PoPs, including more than 400 Edge Locations, and 13 regional mid-tier caches in over 90 cities across 48 countries (current status can be found here: Amazon CloudFront Key Features).

This image shows the Amazon CloudFront global edge network

Amazon CloudFront global edge network

Each PoP is isolated from the others, which means a failure affecting a single PoP or metropolitan area does not impact the rest of the global network. The AWS network peers with thousands of Tier 1/2/3 telecom carriers globally, is well connected with all major access networks for optimal performance, and has hundreds of terabits of deployed capacity. Edge locations are connected to the AWS Regions through the AWS network backbone, a fully redundant, multiple 100GbE parallel fiber that circles the globe and links with tens of thousands of networks for improved origin fetches and dynamic content acceleration.