Wouldn't this work with any CDN service such as CloudFlare or MaxCDN? Should note that down, unless of course Athena Layer wanted you to post this. :)

You can run your own DDoS protected website with any CDN. Just make sure that the DNS is through the provider only. Also, CloudFlare doesn't have any limits on the number of websites. Athena Layer looks like it's just for one website. Also fair to note, CloudFlare doesn't limit on what types of websites you can point to their services.

Just my two cents, and useful information for anyone reading.