Business Process Management (BPM) is continuously gaining importance, especially in the context of the increasingly popular service-oriented architecture (SOA). A formal description of business processes is also a crucial prerequisite for mapping business activities during reorganizations and compliance measures. This book provides a compact introduction to the fundamental principles of process modeling and demonstrates how they can be implemented in modern IT systems. It bridges the modeling concepts with technical representations, standards (e.g., UML, BPMN, WS-BPEL, XPDL), and their implementation. In addition to the basics, practical examples illustrate how companies utilize process-driven workflow management and model-driven software development in their projects.