The best replacement for cloudfront is s3.

The best alternatives to cloudfront are rated as following:
★★★★★  s3
★★★★  akamai
★★★  cloudflare
★★★  maxcdn
★★  edgecast
★★  fastly
★★  azure cdn
★  cachefly
  limelight

Your alternative for cloudfront is not listed? Suggest!
Speaking about cloudfront, one probably shouldn't forget about cloudflare.

Other search terms related to cloudfront and their ratings are:
★★★★★ cloudflare
★★★ wowza
★★ s3
You have in mind a companion for cloudfront and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cloudfront in all years. Click on graph for more.
cloudfront
s3
akamai