Global Banking Hybrid Cloud Migration

FINANCIAL SERVICES CASE STUDY

Modernizing Legacy Mainframes to Cloud Native

The Client Challenge

A tier-1 multinational retail bank serving over 18 million active customer accounts was burdened by aging legacy mainframe hardware. Infrastructure maintenance costs were escalating by 22% annually, while deploy cycles took up to 6 weeks per release.

The FLEGAL Computer Solution

FLEGAL Computer senior architects devised a phased strangler-fig migration strategy. We containerized core transactional microservices using Docker and orchestrated them on Amazon EKS (Elastic Kubernetes Service) paired with dedicated private server clusters for sensitive ledger databases.

• Zero Downtime Cutover: Dual-write database pipelines enabled live verification before traffic switching.
• Automated CI/CD: Reduced release cycles from 6 weeks to 15 minutes.
• Strict Banking Compliance: Full PCI-DSS Level 1 and SOC2 Type II audit certification.

Key Measurable Results