Public Administration desks are in any country the most active point of transactions between the state governments and the citizens. This fact emphasises the importance of services offered by Public Administrations and in the modern technological era, it is essential for Information Technology to provide solutions for transforming these traditionally offered services into electronic transactions that could be initiated over
Interoperability is the key factor which will drive e-Business to the next level by offering fully automated transactions among Enterprise Applications, such as Enterprise Resource Planning or Supply Chain Management systems. Nowadays, research seems to have dealt with the problem of interoperability in various business domains, however the issue of interoperability in heterogeneous business domains — Enterprises, Governmental and Banking