The document discusses variability management in the automotive industry. It focuses on the software product line method, which aims to increase reuse and meet customization requirements through variability management. This involves defining variability in the system architecture through variation points that allow features to take different forms. Four variation patterns are described for resolving variability at different times. The document then discusses AUTOSAR, an open standard for automotive architecture, and how it introduces modules and patterns for managing variability. It also discusses quality trees for assessing variant patterns used in an organization. The main focus is on supporting runtime variability using AUTOSAR through developing a prototype at Volvo Cars.