A regional retail bank operating core banking infrastructure on aging on-premise hardware faced an unavoidable reality: their vendor support contract was expiring, hardware refresh costs were prohibitive, and every planned maintenance window meant hours of service disruption for customers who increasingly expected 24/7 digital banking access.
Regulatory requirements meant any migration had to preserve complete audit trails, meet strict data residency rules, and pass a formal risk assessment before a single workload could move. The bank's internal team had the operational knowledge but not the multi-cloud architecture experience to design and execute a migration of this scale without risking a service outage that would make headlines.
We began with a structured current-state assessment: mapping every dependency across the core banking platform, payment processing systems, and customer-facing applications. No migration plan was drafted until this assessment was complete and reviewed with the bank's risk and compliance teams.
The migration completed across seven months with zero unplanned downtime for customer-facing services. Post-migration, the bank saw a 40% reduction in infrastructure costs through right-sized cloud capacity and reserved instance planning, alongside measurably improved platform reliability.
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