The problem is that AWS only allows hosting domains on S3 that match the hostname. i.e. If I want to host some content from S3 on 'static.mydomain.com', I MUST

The problem is that AWS only allows hosting domains on S3 that match the hostname. i.e. If I want to host some content from S3 on 'static.mydomain.com', I MUST own the bucket of the same name. If someone else creates the bucket on their AWS account, I am stuck. I would have to use a different hostname, or use a more complex workaround. Since creating empty buckets costs nothing, it effectively allows DoSing hostnames from an S3 hosting standpoint. It would be one thing to allow this behavior if a domain owner explicitly wanted it, via a TXT record or something, but as it is, it's a poorly designed solution.