Multi-perspective Assessment of Scalability of IT-enabled Networked Constellations

Networked constellations are often formed to provide commercial IT services by leveraging the Internet technol- ogy. The provision of IT services should remain scalable, meaning that they should remain both economically and technically deployable in different business configurations. The same requirements hold for the Distributed Balancing Service (DBS), which is the subject of our analysis. In this paper we assess potentials of system scale of a constella- tion during its early design phase. We address a multi- perspective analysis approach, by taking a business value (using e3-value ) and an information system perspective (using UML) on the case at hand. We present a structured approach to relate both perspectives, thus enabling a cross- perspective assessment of system scale.