Modern information systems and interactive systems are becoming ever more complex. Hype topics such as service orientation or cloud computing as well as increasingly mature technologies including those in the area of mobile end devices further increase the complexity of these systems. The challenges that our customers often face are the result of multi-dimensional project settings with many stakeholders, interests, and systems as well as the complex workflows of one or several networked companies. Guaranteeing system qualities such as maintainability, usability or security is a key concern for our customers. We constructively approach these challenges in the early software engineering lifecycle with our requirements engineering competence and our architecture-centric engineering approach. Designing usable interfaces that provide a positive user experience for such systems is a challenge that our customers typically face. In addition to usability and user experience, we put a special focus on security, which is becoming increasingly important. Furthermore, we ensure and verify required system qualities with our integrated quality assurance competence. Effective variation management methods help our customers to cope with the multitude of variants and configurations of their systems.