Skip to content

CloudFront Exam Tips

  • 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. Origins can be an S3 Bucket, an EC2 instance, an ELB, or Route53.
  • Distribution: This is the name given to the CDN, which consists 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. (i.e. PUT an object onto them).
  • CloudFront Edge Locations are utilized by S3 Transfer Acceleration to reduce latency for S3 uploads.
  • Objects are cached for the life of the TTL (Time To Live)
  • You can clear cached objects, but you will be charged for invalidations.