In the basic mode, this Docker for AWS enables installing some Docker engines integrated into a Swarm with integration into AWS.

It also provides an option for an alternate full stack which solves a similar problem to Docker Cloud called the Docker Datacentre.

Docker Cloud is a public platform for managing containers.

Docker Datacentre is the behind the firewall version, but here they are standing it up in AWS.

I would expect them to converge over time.