On the retail side, providing the public with highly convenient and secure means of payment helps to underpin confidence in money by enabling private forms of money to be converted, at par, into risk-free central bank money. On the wholesale side, central banks supply the ultimate means of payment for financial institutions, which helps to reduce risks in the financial system.
I would first take the opportunity to clarify that wholesale CBDC is not new in the euro area, since central bank money has been available to the banks in digital form for wholesale transactions for decades, through the Target Services platform.