It is a content delivery service. Content is replicated across different edge location. An edge location is not a region nor a AZ, it is a location where data is cached.

  • it caches static content (web distribution), dynamic, streaming (rtmp) data.

  • it well integrates with s3, ec2, elb, route53.

  • a origin for the CDN can be a ec2, s3 or a elb.

  • objs in CDN are cached with a TTL

  • manually cleared objs are charged by aws.

  • it supports integration with AWS WAF

  • it supports geo restrictions accesses