One thing that I've found to be helpful is to write automation scripts for core business processes. In particular scripts using the python library Fabric3 ends

One thing that I've found to be helpful is to write automation scripts for core business processes. In particular scripts using the python library Fabric3 ends up very readable. It's like runnable docs... How was machine X configured? --> read the setup script. How do I import the CSV data from server Y? --> check the steps in the script. How do I add a new user to system Z? --> check the steps in the script.