The default types shipped with Puppet can be used to do almost everything you need to do to configure your nodes. When you need to perform more tasks than the defaults can provide, you can either write your own custom modules or turn to the Forge (http://forge.puppetlabs.com/) and use a public module. The Puppet Forge is a public repository of shared modules. Several of these modules enhance the functionality of Puppet, provide a new type, or solve a specific problem. In this chapter, we will first cover how to keep your public modules organized for your enterprise, then we will go over specific use cases for some popular modules.