To accelerate financial innovation and expand consumer choices, regulators implement mandatory Open Banking Policies (such as the PSD3 framework in the European Union). [1, 2, 3, 4]

Open banking mandates require traditional commercial banks to provide licensed third-party fintech applications with secure access to core infrastructure networks through Application Programming Interfaces (APIs): [1]

[Core Commercial Bank Ledger] <--- Secure Open API Gateway ---> [Licensed Payment Initiation App]

This infrastructure allows specialized apps to initiate payments directly from a consumer’s bank account with their explicit permission, bypassing traditional card networks to lower processing fees and expand financial utility. [1, 2, 3]