Test data is required in every software development project. The management of test data ensures that it is always available as needed, on time, and in accordance with regulations, thereby increasing the efficiency and quality of testing. This book provides a comprehensive introduction to test data and efficient test data management. It presents both conceptual and technical aspects. The book is divided into three parts: Part I explains the characteristics of test data, the requirements, problems, and risks associated with handling it, as well as the processes of generating and archiving. It also addresses regulations on data protection and test data in the cloud. Part II covers models and best practices for test data management, organization and testing roles, as well as tools and metrics for test data and test data management. Part III includes a procedure for implementation.