Replatformed core banking onto AWS-GCP hybrid in 9 months.
14-year-old monolith running on aging on-prem hardware. Quarterly outages, three-month release cycles, RBI audit risk. We rebuilt on EKS + Cloud Run with event-driven services.
The challenge
Legacy data centre nearing end-of-life, compliance clock ticking, and a release cadence that couldn't scale. Board wanted multi-cloud optionality.
What we did
Greenfield landing zones on AWS and GCP, EKS for stateful services, Cloud Run for API layer, Cloud Spanner for transactional data, Pub/Sub for events. 8 migration waves over 36 weeks. End-to-end CI/CD with policy-as-code for RBI compliance.
Outcomes
Live on two clouds, audit-clean, shipping daily.