We have some good news for people using CDNs or bucket names that are not well-formed. As of today, we are supporting a new parameter called url_prefix for our /s3/store Robot.

Before, we would always return URLs prefixed with "http://<bucket>.s3.amazonaws.com/", where <bucket> is the name of the S3 bucket in which we stored the file.

This new option now allows you to define any prefix, for example "http://E123456.cloudfront.net/", in case that is the name of your CloudFront domain.