Highly customizable service composition and orchestration

One of the current challenges of Service Oriented Engineer- ing is to provide instruments for dealing with dynamic and unpredictable user requirements and environment. Traditional approaches based on workflow for orchestrating services provide little support for configuring at run-time the flow of activities. This paper presents a general approach for composing and orchestrat- ing services in a self-organization fashion. User requirements are made explicit in the system by a goal specification language. These can be in- jected into the running orchestration system that is able to autonomously and contextually reason on them. Therefore, the system dynamically or- ganizes its structure for addressing the result. A prototype of the system has been implemented in JASON, a language for programming multi agent systems. Some aggregate statistics of execution are reported and discussed.