AWS - CloudFront

• Edge Location - This is the location where content will be cached. This is separate to an AWS Region/AZ.
• Origin - This is the origin of all the files that the CDN will distribute. This can be either an S3 Bucket, and EC2 Instance, an Elastic Load Balancer or Route53.
• Distribution - This is the name given the CDN which consists of a collection of Edge Locations.
• Web Distribution - Typically used for Websites.
• RTMP - Used for Media Streaming.
• Edge locations are not just READ only, you can write to them too. ( ie put an object on to them)
• Objects are cached for the life of the TTL ( Time To Live )
• You can clear cached objects, but you will be charged.