This says it's a system for delivering content "efficiently", but it doesn't look like this manages that. Normally loading a resource is a round trip to your server, which might be a bit inefficient because your server could be on the other side of the world. But what they replace it with is:

1. Round trip to Farba to get metadata.

2. Round trip to your "driver" to get the resource.

3. Computing the hash of the resource to ensure the "driver" didn't cheat.

It could still be worth it as a way of saving money on bandwidth, but I'd be quite surprised if you got the speed benefits of a CDN.