Technische Universitat Munchen
As systems become more service oriented and processes increasingly cross organizational boundaries, interaction becomes more important. New technologies support the development of such systems. However, the paradigm shift towards service orientation requires a fundamentally different way of looking at processes. This paper aims to provide some foundational notions related to service interaction. A set of service interaction patterns is given to illustrate the challenges in this domain. Moreover, key results are given for three of these challenges: how to expose a service?, how to replace and re ne services?, and how to generate service adapters?. These challenges will be addressed in a Petri net setting.