EP47: Key Focus Areas for Transitioning from Legacy Core to Digital Core Banking

Banks must modernize legacy core banking systems to enable innovation, meet rising customer expectations, and respond quickly to change. Traditional cores are rigid, fragmented, and unable to support true end-to-end digital transformation, even when modern channels exist. A future-proof “Digital Core Banking” approach embeds digitisation across the bank, not just at the front end.The Digital Core Banking model rests on key principles: hollowing the core to act mainly as a system of record; adopting componentised, modular architectures; using microservices for agility, faster upgrades, and lower costs; ensuring cloud readiness for scalability, resilience, and efficiency; and enabling open banking through APIs. Cloud-based, SaaS-enabled cores allow banks to reduce costs while increasing flexibility and speed to market, while open banking fosters collaboration with fintechs and enhances competition.Institutions that remain dependent on legacy architectures risk falling behind digital challengers. Core modernisation is a multi-year journey, typically requiring 6–12 months of planning and 2–3 years of phased implementation to fully realise benefits.