Service orientation has been touted as one the important technologies for designing, implementing and deploying large scale service provision software systems. In this position paper we attempt to investigate an initial classification of challenge areas related to service orientation. More specifically, we partition the problems and related issues of service orientation in three domains—Business, Engineering, and Operations domain—along with the notion of Service Strategy as a binding model for these domains. A list of potential challenges for the maintenance and reengineering of service-oriented systems is presented for discussion.

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