In each industrialized country, the public administration (PA) has significantly shifted its interests to reach the innovative Information and Communication Technologies (ICTs), undergoing important Business Processes Reengineering (BPR) as a result of e-Government projects. The new challenge for public administrations is based on the exploitation of their knowledge resources in order to improve their processes and to offer more effective and efficient services to the users. Knowledge has to be managed as a valuable asset and a key resource. For this reason an organizational transformation is indispensable, and it cannot be just based on the management of data and information, which is what public administrations actually do. The aim of this contribution is to investigate the spreading of cooperating strategies in public administrations in order to better understand why and how these organizational behaviors could assure advantages for PA and citizens.