Spinning Up EC2 on AWS with Boto, Fabric, and Cloud Formation

I recently put together a project that strikes a balance between implicit and explicit resource provisioning in AWS. In a nutshell, it uses <a href="https://github.com/boto/boto">Boto</a> as an AWS API client, <a href="http://docs.fabfile.org/">Fabric</a> for command execution, and <a href="http://aws.amazon.com/cloudformation">Cloud Formation</a> as a declarative provisioning tool. The demo app spins up a MongoDB replica set in EC2. You can find the code <a href="https://github.com/dixonwh/aws-provisioning">here</a>.