AutoScalr released a Terraform provider today that allows you to leverage AutoScalr in any Terraform stack that uses Auto-Scaling on AWS. If you are using Terraform as your infrastructure as code deployment tool, you can now reduce your operational cost of the stack on AWS by 50-75% by simply adding one 8 line resource to your Terraform file. When Terraform builds your stack, AutoScalr will automatically be initialized and configured to manage the stack to provide you the most cost-effective operation of the stack, guaranteed to save you money or it is free.
Details on how to download and use are available here.
More details on how AutoScalr can accomplish this are on the How It Works page