API Architecture: The Invisible Engine Powering Modern Banking

By Echezona Agubata 2 Banking has evolved far beyond the days of paper ledgers and long queues. Today, it’s a dynamic force driving Nigeria’s economy, responding to customers in real time, and powering digital innovation. The unsung hero behind this transformation is the Application Programming Interface (API)—a tool that lets bank systems communicate seamlessly with each other and external partners. In Nigeria’s fast-growing digital finance landscape, APIs are the invisible engine enabling banks to offer instant balance checks, process payments at retail checkouts, or verify identities for loan approvals. The secret to their success? A robust API architecture, the structured framework that makes banking secure, scalable, and innovative. Picture API architecture as a bridge connecting islands of financial services. It allows banks to share data securely. In Nigeria, where digital banking is literarily booming, APIs let banks like Coronation Merchant Bank expand services without rebuild...