Long before the following Containerize all the things meme regularly started to pop up in people's presentations:
People were saying the same thing about Puppet. So, what is Puppet and why would you want to use it on all things?
Puppet Labs, the makers of Puppet, describe Puppet as:
"With Puppet, you define the state of your IT infrastructure, and Puppet automatically enforces the desired state. Puppet automates every step of the software delivery process, from provisioning of physical and virtual machines to orchestration and reporting; from early-stage code development through testing, production release and updates."