This unit provides an overview of the issues related to implementation and operation of enterprise applications. It highlights the critical link between business processes, information technology and the Internet. It presents e-business technologies as an important basis for enterprise integration and discusses associated architectures and applications supporting enterprise applications. It emphasizes the critical role managers play in the integration and implementation of enterprise applications and adopts a business process emphasis to examine organizational change processes. A particular focus is placed on designing and implementing e-business applications. The practical work focuses on the use of UML models to document the change process.