Since the introduction of grid computing various efforts were directed towards integrating and combining the grid with SOA technologies. That was mainly motivated by capitalizing on the widely desirable properties of SOA technologies. Nevertheless, the combination of SOA with grid computing in real practice is mainly tangible in the alignment of grid technologies with Web services. Therefore the effects were merely noticeable in the application layer and were more likely to define a SOA model for inner components' interactions. The deficient combination of grid with SOA needs to be deeply investigated to reach a comprehensive integration of grid with SOA that starts from the application layer till lower grid middleware layers. A major impact in this integration is offering application layer functionalities as services and thus having application specific QoS attributes originating from the application layer to be included in job scheduling. This paper presents integrating Grid computing with SOA into a generic Service Oriented Architecutered Grid (SOAG) model. A SOAG model for MHGrid -a service-oriented grid application for solving global optimization problems- is also briefly introduced.
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