Web Service composition is becoming the most promising way for business-to-business systems integration. However, current mechanisms for service composition entail a trade-off on multiple and complex factors. Thereby, existing solutions based on business Web Services, semantic Web Services, or the recent RESTful services, lack of a standardized adoption. This paper gives an overview of current approaches according to a set of features. Moreover, related core problems and future directions of service composition mechanisms are pointed out.

Technology used by virtual teams during a distributed requirement elicitation process is usually selected according to predetermined business politics, personal criteria of managers, etc. However, when technology is not appropriate for all members of the team, it is possible that some stakeholders would not feel completely comfortable, and hence influence their participation negatively. In order to mitigate these effects during a distributed requirements elicitation process, we propose a model based on psychology theories to identify suitable elicitation techniques according to cognitive aspects of most stakeholders in the group.