This book guides readers through the core principles and practices of High-Velocity IT, offering a comprehensive approach to modern IT service management. It begins with foundational concepts, introducing High-Velocity IT and the essential behaviors needed for success in dynamic environments. Readers are then introduced to the digital product lifecycle and the ITIL operating model, which emphasize the importance of service value systems and value streams in driving business outcomes. The book delves into key behaviors that support continuous improvement, including adaptability, trust, and commitment to learning. It also covers various principles and models, such as Lean, Agile, and Design Thinking, offering practical techniques to enhance IT performance. In the later chapters, the focus shifts to ensuring valuable investments, fast development, resilient operations, and co-created value. It presents techniques for achieving these objectives while aligning with ITIL 4 practices. The final chapter prepares readers for the HVIT certification exam, consolidating key learnings and providing a solid foundation for future success in High-Velocity IT environments. This book offers both theory and practical guidance for those seeking to thrive in fast-paced, value-driven IT operations.