Service Composition in the Context of Grid

Grid computing has become an important new research field. The goal of the Grid computing infrastructure is to pervasively access the computational resources available on the Internet. The web service technology has the potential to achieve the goal of grid computing because of its self-contained, self-describing, and loosely coupled features. The resources can be discovered and shared through the web service’s process interface. In this paper we discuss how the web services can be composed from a conceptual perspective and propos a context based semantic model for better describe web service in order to realize automatic service discovery, composition, and invocation.