Requirements-driven Internetware services evaluation

In the services era, evaluation of existing services and planning for new services according to user requirements are key activities that need systematic support. This paper proposes a requirements-driven evaluation framework for Internetware-based services, with respect to both their functionality and risk. In particular, we offer an account of how to model these requirements, how to derive from them a space of service functionality alternatives, and how to select among these alternatives on the basis of desired qualities. In essence, the selection of service functionality is framed as a satisfaction problem for requirements; while service risk is addressed as an analysis of failure rates. We use a typical logistics example scenario to illustrate the proposed framework.