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This textbook provides a comprehensive and well-structured introduction to the fundamentals, principles, and techniques of requirements engineering. The book includes numerous real-world examples to illustrate all aspects of requirements engineering.

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Requirements engineering is the process of eliciting individual stakeholder requirements and needs and developing them into detailed, agreed requirements documented and specified in such a way that they can serve as the basis for all other system development activities. In this textbook, Klaus Pohl provides a comprehensive and well-structured introduction to the fundamentals, principles, and techniques of requirements engineering. He presents approved techniques for eliciting, negotiating and documenting as well as validating, and managing requirements for software-intensive systems. The various aspects of the process and the techniques are illustrated using numerous examples based on his extensive teaching experience and his work in industrial collaborations. His presentation aims at professionals, students, and lecturers in systems and software engineering or business applications development. Professionals such as project managers, software architects, systems analysts, and software engineers will benefit in their daily work from the didactically well-presented combination of validated procedures and industrial experience. Students and lecturers will appreciate the comprehensive description of sound fundamentals, principles, and techniques, which is completed by a huge commented list of references for further reading. Lecturers will find additional teaching material on the book´s website, www.requirements-book.com.

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Part I Fundamentals and Framework.- 1 Motivation - 2 Requirements - 3 Towards Continuous Requirements Engineering - 4 TheRequirements Engineering Framework.- Part II System Context.- 5 Context and Context Separation - 6 Context Structuring Scheme.- Part III Requirements Artefacts.- Part III.a Goals.- 7 Fundamentals - 8 Documentation of Goals.- Part III.b Scenarios.- 9 Fundamentals - 10 Types of Scenarios - 11 Documentation of Scenarios - 12 Usage of Goals and Scenarios.- Part III.c Solution-Oriented Requirements.- 13 Traditional Perspectives of Requirements - 14 Object-Oriented Models.- Part IV Core Activities.- Part IV.a Documentation.- 15 Fundamentals of Documentation - 16 Documentation in Natural Language - 17 Structuring Textual Requirements - 18 Fundamentals of Conceptual Modelling - 19 Model-Based and Textual Requirements.- Part IV.b Elicitation.- 20 Fundamentals of Elicitation - 21 Elicitation Techniques - 22 Assistance Techniques for Elicitation.- Part IV.c Negotiation.- 23 Fundamentals of Negotiation - 24 Conflict Management - 25 Negotiation Techniques.- Part V Validation.- 26 Fundamentals of Validation - 27 Validation Techniques - 28 Assistance Techniques for Validation.- Part VI Management.- 29 Three Management Activities - 30 Traceability of Requirements - 31 Prioritisation of Requirements - 32 Change Management for Requirements.- Part VII The Goal- and Scenario-based Requirements Engineering Method COSMOD-RE.- 33 The COSMOD-RE Method - 34 Application of the COSMOD-RE Method: A Driver Assistance System.- Part VIII Requirements Engineering for Software Product Lines.- 35 Fundamentals of Software Product Line Engineering - 36 Managing Product Line Variability - 37 Domain Requirements Engineering - 38 Application Requirements Engineering.- Part IX Relations to Design and Testing.- 39 Intertwining of Requirements Engineering and Architecture - 40 Requirements-based Testing.

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