An overview of Service-Oriented Computing challenges and issues

Service compositions allow an high dynamism and flexibility, indispensable properties in today software sys- tems, where services could dynamically enter and leave a system during its execution. This paper provides an overview about the Service-Oriented Computing research, introducing the issues and engineering challenges in this context. We refer to Service Foundations, Service Composition and Service Management&Monitoring showing how each of these layers defines a set of constructs, roles and responsibilities. A general overview without claim of completeness is given on the these aspects while a particular attention is given to the research problems related to dynamic service compositions, such as choreographies, addressing the role fulfillment and the choreography realizability problems.