Heinz Züllighoven graduated in mathematics and German language and literature and holds a Ph.D. in computer science. He is a professor in the Computer Science Department at the University of Hamburg and managing director of IT–Workplace Solutions Ltd., where he consults on industrial software development projects in the area of object-oriented design; among his clients are several major banks and companies of the service industry. His current research interests include object-oriented migration strategies for legacy systems and the architecture of large industrial interactive software systems.