At The Alliance, when we need to deploy a new set of services, we make sure everything is version controlled, so everything can be peer-reviewed and easily reproduced. We primarily use AWS for our infrastructure, so this means using CloudFormation to manage resources. Cloudformation provides a way for us to implement our infrastructure using declarative YAML templates.
Today we're making some of the more general-purpose and re-usable components of our infrastructure available on GitHub at github.com/theaaf/aws.
We'll be gradually open sourcing more over the months to come.