The recent rapid changes in the business environment challenge computer science to develop novel interrelated information and communication technologies and to bring them in accordance with the social needs of cooperating user groups as well as with management requirements of private and public organisations. This book takes the modern customer-driven and groupwork-oriented perspective on business process organisation and reengineering: extending the language-action perspective from the CSCW field, its customer-oriented view of workflows enables new ways of business process analysis and design. This leads to powerful new combinations of information and cooperation technologies.