Biographical sketches of authors

Frank Leymann   IBM Software Group, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (electronic mail: ley1@de.ibm.com). Dr. Leymann is an IBM Distinguished Engineer and a member of the IBM Academy of Technology. He is the chief architect of IBM's workflow technology, and a member of the IBM Application Integration Middleware (AIM) Architecture Board that sets the overall direction of IBM's middleware. He has worked on database systems, database tools, and transaction processing. Dr. Leymann has published many papers in various journals and conference proceedings, filed a multitude of patents, and is the coauthor of textbooks on repositories and workflow systems. He served on program committees and organization committees for many international conferences and is editor of the journal of the database management system special interest group of the German computer society Gesellschaft für Informatik (GI).

Dieter Roller   IBM Software Group, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (electronic mail: rol@de.ibm.com). Mr. Roller is an IBM Senior Technical Staff Member and a member of the IBM Academy of Technology. He held several technical and management positions in his IBM career. His current focus is on the architecture and design of MQSeries Workflow, where he is contributing to all facets of the development and enterprise-wide deployment of workflow-based applications, and is deeply involved in various customer projects. Mr. Roller has published papers in various journals and conference proceedings, mainly on workflow technology, he has filed many patents, and has given talks at conferences and professional society meetings. He is a coauthor of a textbook on workflow systems.

Marc-Thomas Schmidt   IBM Software Group, Hursley Park, Winchester Hampshire S021 2JN, United Kingdom (electronic mail: mts@uk.ibm.com). Mr. Schmidt is an IBM Senior Technical Staff Member, the lead architect for IBM's WebSphere Business Integrator solution, and a member of the AIM Architecture Board. He has been working in the area of business process management for many years, focusing on workflow management, message brokering, integration of message-based and object-oriented technologies, and more recently applications of BPM technologies for implementing Web services. He has published several papers, filed a number of patents on these topics, and contributed to workflow standardization efforts in the Object Management Group and Workflow Management Coalition.