Paul Grefen is a senior full professor in digital business architecture at Eindhoven University of Technology and a principal architect at Eviden Digital Transformation Consulting. He received his Ph.D. in computer science in 1992 from the University of Twente. He has been a visiting researcher at Stanford University, IBM Almaden Research Center, Penn State University and KU Leuven. He has been involved in many European and national research projects, mostly in collaboration with industry. He has authored and edited books on workflow management, electronic business, service-dominant business engineering, information systems, blockchain and business process management. His current work covers digital business transformation, architectural design of business systems, inter-organizational business process management and service-oriented business engineering.