For things like this, I suggest S3+CloudFront. I don't know how well it compares to other CDNs in terms of cost-at-scale and performance-worldwide, but it is ve

For things like this, I suggest S3+CloudFront. I don't know how well it compares to other CDNs in terms of cost-at-scale and performance-worldwide, but it is very good and can be set up without a sales process.