Edge Locations are the last component in the AWS global infrastructure. They are collocated resources on the edge of AWS Regions. CloudFront uses this type of infrastructure for content delivery, to access services and data efficiently in the main cities of the world. They expand the functionality of the AZs, arranging an edge location cache providing low latency for applications, and it is a Content Delivery Network (CDN). It is also used to propagate DNS and Amazon Route 53 anycast data; you can even execute AWS Lambda directly on the border.