. THE CASE COMPANY
Our results are based on empirical data from industrial projects at a large company that is using a product line approach [9]. The company has around 5000 employees and develops embedded systems for a global market. A typical project has a lead time of up to 2 years and develops around 60-80 new features, corresponding to approximately 700-1000 detailed requirements. Each feature is developed by a cross-functional team including around 2-10 developers. In combination with the legacy functionality, which amounts to a very complex and large set of requirements at various abstraction levels in the order of magnitude of 20,000 entities, it is an example of the Very-Large Scale Requirements Engineering context [11].