Bringing Semantics to Web Services
IEEE Intelligent Systems
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Service-oriented architectures (SOA) are based on a paradigm that aims at facilitating the management of business processes. Services are business relevant functionalities that are transparently provided by one or more applications. This simplified view on SOA has little in common with the view on technical and non-functional system properties from the high-availability research area. After the presentation of service examples taken from various research approaches this position paper introduces a service layer model delimiting the notion of services. It is shown that specific layers of this model can help to determine and increase the availability of business processes. Furthermore the usability of service composition is questioned. The outlook in the last section of this position statement dares to predicts a shift from service-orientation to event- and business-orientation.