Configuration is the medium in which system administrators work. Ranging from the most sweeping decisions to minor troubleshooting of software problems, the act of helping people use computers necessitates a stream of decisions that result in the configuration and software infrastructures that each of us uses on a daily basis. Configuration management is a process whereby administrator interactions with configuration are streamlined and simplified. As the scale of infrastructures grows and the complexity of software systems increases, the cost of system administration rises rapidly....