Minsait report says banks must modernize core systems while preserving mainframe business rules

• Indra’s Minsait flagged core banking mainframe modernisation as a strategic priority as regulation, AI adoption, and faster product cycles intensify.
• Report estimates about 80% of enterprise data resides or originates on mainframes, processing roughly 30 million transactions daily.
• Study says 92% of the world’s top banks still use mainframes; 90% of CIOs see new digital apps remaining dependent.
• Agentic AI cited as a risk-reduction tool to analyse legacy code, recover undocumented business rules, generate documentation, speed conversion.
• Gradual migration highlighted as critical, with parallel operation of legacy and modern platforms to protect continuity during large-scale transitions.

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