Long ago, Italian Public Administrations started a process to increase the efficiency of their administrative procedures, adopting ICT technologies and tools in place of paperwork, but the approach was not structured nor synchronized. The result now is that Public Authorities’ legacy systems are based upon heterogeneous and vendor specific solutions. To increase their efficiency is one of the most challenging issues that Public Administrations are facing in the latest years in order to ensure a faster communication among public bodies, avoid data redundancy and improve the service provided to citizens. The key element is to increase the cooperation among public bodies allowing a seamless communication which will not modify the already existing systems. The Friuli Venezia Giulia Region interoperability framework, presented in this paper, provides a layer which ensure the communication between Administrations increasing the efficiency of administrative procedures, through the adoption of secure electronic communication, and lead to the delivery of a better public service in terms of content and response time