International Academy Publishing (IAP)
Today, e-Government is an emergent multidisciplinary research field that has the aim to support the delivery of electronic information and services to citizens, businesses, and other stakeholders. This vision should be based on an effective cooperation between Public Administrations (PAs) that need to be more and more organized to delivery value-added e-Government services. Such cooperative environments should interconnect several PAs using interoperability architectures exploiting the service-oriented paradigm. In this paper, the authors would highlight the role that metadata plays in applicative cooperation presenting some guidelines and an architecture able to assure interoperability between informative systems to favor the modernization of Public Administrations (PAs) reducing time and costs for its functioning.