While S3 is not a CDN as such, it does have a feature called "Request payer" which means the requester pays for the request. It won't mitigate anything for publ

While S3 is not a CDN as such, it does have a feature called "Request payer" which means the requester pays for the request. It won't mitigate anything for public files, but it will mitigate DoS attacks through a third-party.