The IEDOM implements, on behalf of the Banque de France, the central bank tasks in the overseas departments, whose currency is the euro, while the IEOM acts as the central bank in the overseas authorities, whose currency is the Pacific franc. It appears necessary to launch a new stage in the realisation of IT synergies between the IEDOM and the Bank of France, leading in particular to the elaboration of a complete roadmap for the rationalisation of the IEDOM application portfolio.