Banking Legacy Software Modernization: How Banks Upgrade Outdated Systems
Key Takeaways Banking legacy software modernization is a staged program across core, integrations, data, and infrastructure, not a single replacement event. The pressure is both financial and regulatory: banks spend up to 70% of their IT budgets on legacy systems maintenance, and DORA has required ICT resilience since January 2025. Five approaches (API wrapping, replatforming, refactoring, sidecar, full core replacement)...
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