Oracle/Sun developed a sophisticated eHealth system for BC. The system is made up of many smaller more manageable components that work together. Each component in the system requires testing against the functional requirements, non-functional requirements, and use cases. Aversan a suite of repeatable tests that can be executed to evaluate the state of the system and ensure it meets the requirements. Regression testing is used to ensure that changes to the system do not break the functionality of the system in unexpected ways. Aversan provides value by finding flaws in the system early reducing the associated costs of unexpectedly finding errors and by measuring the quality of the system.