In this chapter, we really focused on how to build a Puppet module that is shippable. The use of Hiera and the separation of data from the logic of the module is not only applicable to modules that deploy containers, but for any Puppet modules you write. At some point in your Puppet career, you will either open source a module or contribute to an already open-sourced module. What you have learned in this chapter will be invaluable in both of those use cases. Lastly, we finished with something fun, deploying Kubernetes as the frontend to UCP. In doing this, we also looked at application routing/load balancing. This is obviously a great skill to master as your container environment grows, especially to stay away from issues such as port collision.