Devops is still a new topic for lots of people, and this introduction is a nice place to start. It provides a bit of the history, along with explaining Devops with a focus on culture, automation, measurement and sharing.
Reading through the documentation, I saw it mention Puppet and Chef which both appeared to be some sort of witchcraft that allowed you to automatically configure and setup these virtualised servers. Bingo. Easy server configuration management.
Devops isn't just about tools, or only about large organisations and complex software. This post introduces some of the practices from the point of view of the Wordpress administrator.