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Barry Demchak, Vina Ermagan, Claudiu Farcas, Emilia Farcas, Ingolf Heiko Krüger, Massimiliano Menarini · 2008
Ultra-Large-Scale (ULS) Software-Intensive Systems are the new frontier for Software Engineering research and development. The requirements space for ULS encompasses, in particular, the system-of-systems integration challenge. This challenge is characterized by the inherently distributed nature of the constituent systems and the integration solution, the typically interdisciplinary back-ground from which these constituent systems emerge, the need to address a broad spectrum of crosscutting concerns as part of the integration fabric, and a significant amount of agility both in the integration architecture and the development process to accommodate changing requirements over time. In this position paper, we discuss some of the consequences we see emerging from this challenge, propose an architectural blueprint for addressing them, and present future research directions.