This book explains the new requirements of the EU Artificial Intelligence Act in an understandable and application-oriented manner. In addition to a complete commentary on the AI Act, the book contains chapters on technical and ethical principles, and responsibility for AI and data protection aspects. It describes in detail which obligations are imposed on providers and commercial users of AI systems, how such systems can be introduced and used in compliance with the law, and what requirements the providers and users of such systems are subject to.