Don't Panic!
Your organisation has been using Puppet to manage its infrastructure, but it's grown organically over time with best practices and the long-term implications of decisions never really being thought about. A new Puppet administrator has just been handed responsibility for the Puppet infrastructure, we need to help them out.
This is a common scenario, the Puppet admin has left an organisation and a new Puppet admin has been assigned but doesn't have any real experience of Puppet, just like their predecessor. We need to teach them what Puppet is, help them understand what they've taken on and use Puppet best practices such as roles and profiles, and Hiera to organize their configuration management into a clear and robust structure that will give them confidence to make the required changes as and when they are needed as the infrastructure grows.
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