Abstract: A network service system provides services to a plurality of entities through a network. The system comprises at least one identity subsystem for managing identity information associated with the entities, at least one geographical information subsystem for managing information associated with geographical location of the entities, and at least one trust validation subsystem for authenticating the communication among the entities based on predefined preference. Further, the system comprises a network manager for communicating with one or more of the at least one identity subsystem, the at least one geographical location subsystem, the at least one trust validation subsystem and the plurality of entities to provide the services. The services may enable federation of the networks.