PuppetConf 2013

At GitHub, we've got a pretty large Puppet code base to manage all of the GitHub.com infrastructure. It's also pretty old; a little over four and a half years of history lives in our Puppet repo. We've also hired a lot more people over the past few years, going from around 70 people a year ago to more than double that now. This talk focuses on how we continue to embrace the GitHub principles of constantly shipping, iterative improvement, constant experimenting, and no managers to manage our rather large Puppet infrastructure with success.