"Agile Modeling with UML" is a technical book that addresses the methodological treatment of UML/P and covers three central themes of model-based software development: code generation, systematic testing of programs using a model-based definition of test cases, and the evolutionary refactoring and transformation of models. The book provides a clear distinction between fundamental concepts and their practical application, enabling readers to directly transfer the knowledge to other model-based approaches and programming languages. The structure of the book begins with an introduction to the goals and the agile UML-based approach, followed by detailed explanations of the techniques for code generation and the specifics of testing with UML/P. The comprehensive treatment of these topics makes the book a valuable resource for professionals in the field of software development.