Core banking system

Roles that need it

• Business Analyst (Banking)
• Programme Manager (Banking)
• Project Manager (Banking)
• Loan Operations Analyst
• Cash Management Product Manager

Skills it belongs to

• Functional analysis between business and IT
• Bank product accounting (loans, deposits, EIR, IFRS 9 stages)
• Data migration and cutover

Related concepts

• MainframeA mainframe is a large, highly reliable central computer built to process very high volumes of transactions. Many banks and insurers still run core accounts, payments and policy systems on mainframes, often in COBOL, which makes skills and modernisation a recurring issue.
• Legacy decommissioningLegacy decommissioning is the controlled shutdown of an old system once its functions and data have moved elsewhere. It covers archiving records for retention, removing interfaces and access, ending licences and evidencing that nothing still depends on the system.
• Data migrationData migration is moving data from an old system to a new one, including extraction, cleansing, mapping to the new structure, loading and reconciliation. Migration rehearsals (mock loads) test the process before the real cutover.
• CutoverCutover is the planned sequence of steps that switches a business from an old system or process to a new one: freezing changes, final data migration, reconciliations, technical switch and first checks. A cutover plan lists every task with its owner, timing and rollback point.

Sources

• Regulation (EU) 2022/2554 (DORA), EUR-Lex (external site) accessed 31 Oct 2026

Updated 31 Oct 2026.