Information system models about main processes and applications are, following decision in Unicredit holding, the italian ones through Eurosig, covering the four most relevant entities: Italy, Germany, Austria, and Poland (about 70% of the volumes, intended as transactions); morevoer Core2 system (austrian system which covers about 20% of total volumes) and Iflex (bulgarian operational system, which covers about 10% of total volumes) will be used…