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While supply chain integration is achieved at three levels: information, resources and organization, the emphasis of the paper is placed on how information integration can be achieved through B2B e-hubs. After reviewing how e-hubs have evolved since its inception, we examine three groups of e-hubs classified by supply chain processes, namely procurement, transportation and customer relationship management, then a value-gap analysis is performed to identify the values added by the e-hubs and their potential gaps and limitations. Finally, we present a framework for integrating existing e-hubs in order to expand their functionality to provide a better solution to supply chain integration.