Preface RE4SuSy: 7th International Workshop on Requirements Engineering for Sustainable Systems

The RE4SuSy workshop series has established a strong and growing research community around the different aspects of sustainability and how to support them in requirements engineering. Since requirements define how and what a software will do, we maintain that requirements engineering is the key point in software engineering through which sustainability can be fostered. Thus, the RE4SuSy workshop series is concerned with research on techniques, tools, and processes for sustainability through requirements engineering. Last year the workshop initiated an effort to start converging the RE for sustainability community to a common set of fundamentals. This edition of the RE4SuSy workshop will build on the the initial convergence effort, helping to clarify what characteristics a requirement should posses, or what constraints should it meet in order to be called a “sustainability requirement”. RE4SuSy is an interactive workshop: the contributors and prospective participants will engage well before the workshop date through on-line collaborative writing, discussion, and peer feedback. The workshop aims to foster community growth by supporting new collaborations, holding preliminary case studies, discussions, and birds-of-a-feather group work.