[djkrul]

We have an auto-scaling feature in private beta over at https://www.tilaa.com. Drop us a line if you want to test! Ask for me (Dennis) if you need implementation assistance.

You can either use VM snapshots or our metadata service (cloud-init compatible) to provision new instances automatically. We also have an API, but you don't need it for autoscaling.

We're a European cloud provider (based in the Netherlands) and don't have PoPs in the US though.