In the last few decades, the size of the average infrastructure and complexity of the stack has skyrocketed. Managing infrastructure on an ad hoc basis, as was once possible, is very error-prone. In a DevOps culture, the provisioning and configuration of servers, networks, and services in general are all done through automation. Configuration management is often what the DevOps movement is known for; however, as you all know now, it is just a small piece of a big puzzle.