Abstract: An improved system and method for completing performance analysis for a target system is disclosed. According to the current invention, different types of configurations files are created, each to describe one or more respective aspects and/or portions of the target system. Each of these file types may include a combination of parameter values and equations that represent the respective portion of the system. After the configuration files are defined, scenarios are created. Each scenario includes a set of configuration files, with some or all of the files being of different file types. The files included within a scenario provide all parameter values and equations needed to calculate performance data for a particular revision of the target system. Next, a performance study is defined to include one or more of the scenarios. Finally, performance data is derived for each of the scenarios in the performance study.