The art, craft, discipline, logic, practice and science of developing large-scale software products needs a professional base. The textbooks in this three-volume set combine informal, engineeringly sound approaches with the rigor of formal, mathematics-based approaches. Advocating a novel approach based on understanding the application domain before formulating the requirements, the book takes the reader from the principles and techniques for the development of domain descriptions, via principles and techniques for the derivation of requirements prescriptions from domain models, to principles and techniques for the refinement of requirements into software designs: architectures and component design. Focusing only on the informal parts, this book targets undergraduate students in courses on software engineering and college lecturers in that field, while the full version of the book also targets advanced students, lecturers and researchers.