How to use aws CloudFront for CDN
1. create a new distribution in AWS cloudfront service, select alternative domain names
2. create a new subdomain, and point the new subdomain CNAME to the xxxxxxxx.cloundfront.net you just got from the service.
3. Do the original setting for, tell the service where it can get content, the original website can in EC2 or just any website that out side of aws.
4. Setting cache Behaviors, tell the service what kind of objects can be cached, what kind of things need forward to the original server get the content.
5. For each behavior, do the related settings.
6. For the default behavior, do the related settings.
7. Wait few minutes, when the status changed to Deployed, then the clound front is working.
How to use aws CloudFront for CDN
原文：http://www.cnblogs.com/shadowzhang/p/AWS_CDN_cloudfront.html