This document discusses how Puppet can be used to enable continuous integration (CI). Puppet allows infrastructure to be automated and treated as code, facilitating CI workflows where development, test, and production environments are configured through Puppet code. The document outlines a CI process where developers and operations teams commit code to a source control management system. A build server then pulls the application and Puppet infrastructure code, packages the application, simulates the Puppet code to test infrastructure changes, and instructs the Puppet master to deploy the application and configure infrastructure in the target environment based on a specific tag. Testing can then be run after deployment to validate changes across the full environment.