> you pay the much cheaper CloudFront outbound bandwidth costs, instead of the S3 outbound bandwidth costs.

What? CloudFront bandwidth costs are, at best, the same as S3 outbound costs, and at worse much more expensive.

S3 outbound costs are 12 cents per GB worldwide. [1]

CloudFont outbound costs are 12-25 cents per GB, depending on the region. [2]

Not only that, but your cost-per-request on CloudFront way more than S3 ($0.004 per 10,000 requests on S3 vs $0.0075-$0.0160 per 10,000 requests on CloudFront)

[1] http://aws.amazon.com/s3/pricing/ [2] http://aws.amazon.com/cloudfront/pricing/