The Bank for International Settlements (BIS) Innovation Center joined forces with Banque de France, the Monetary Authority of Singapore and the Swiss National Bank to launch Project Mariana, a cross-border project using automated market makers for wholesale CBDC transactions. The project expands on previous wCBDC experiments at the BIS Innovation Center, exploring concepts developed in DeFi applications, and setting out to investigate whether automated market makers using wCBDCs could improve the efficiency, security, and transparency of foreign exchange transactions and settlements, as well as eliminate Some of the associated risks in the foreign exchange market.