Although enterprise, system, and software architectures have many common features and often overlap in practice, the presence of each architecture is required in the planning and design of a system. The alignment of these architectures in the design processes is important in the development of software-intensive complex systems. Aligning Enterprise, System, and Software Architectures covers both theoretical approaches and practical solutions in the processes for aligning enterprise, systems, and software architectures. This book aims to provide architects and researchers with a clear understanding of all three types of architectures.