Core Banking System Transformation

Executing high-stakes migrations of legacy core banking systems with zero operational impact and absolute data integrity.

Discuss Your Migration

The Migration Nightmare

Your core banking system is 15+ years old. Every critical business process depends on it. A single hour of downtime costs €250,000 in lost transactions and reputation damage. The vendor wants you upgraded by Q2, but your last attempt to migrate a small subsidiary failed after 18 months and €4M spent.

Our Proven Migration Methodology

Risk-First Planning

Identify failure points before they happen

  • Complete dependency mapping across 200+ integrated systems
  • Data quality assessment and cleansing strategy
  • Rollback procedures tested before go-live

Parallel Running Strategy

Prove the new system works before switching over

  • Run old and new systems simultaneously for 30+ days
  • Automated reconciliation detecting 100% of discrepancies
  • Gradual customer migration minimizes risk exposure

Zero-Downtime Cutover

Customers never notice the switch

  • Cutover executed during off-peak hours with full rehearsal
  • Real-time monitoring detecting issues within seconds
  • 24/7 war room support for first 72 hours post-migration

Post-Migration Stabilization

Ensure long-term success

  • Performance tuning to match or exceed old system SLAs
  • Knowledge transfer to internal teams
  • Hypercare support for critical first 90 days

€0 Downtime During Infrastructure Expansion

Major Irish retail bank

Led the upgrade of critical core banking infrastructure serving 1.2M customers while maintaining 24/7 operations:

  • • Migrated €2.4B in daily transaction volume with zero data loss
  • • Completed cutover in 4-hour maintenance window with no customer impact
  • • Achieved 99.99% system availability during 6-month transition period
  • • Delivered 40% performance improvement in transaction processing

Your Core System Migration Doesn't Have to Be a Gamble

Schedule a confidential migration assessment to understand your true risks and develop a proven execution strategy.

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