MF
MediFlow
A healthcare management system connecting patient records, scheduling and billing in one place.
View Case Study
FinTech · 2025
Vantage Pay
A secure digital banking platform handling real-time payments and account management at scale.
The Challenge
Vantage Pay's existing core-banking layer had been extended for over a decade and could no longer keep pace with transaction volume. The team needed to replace it entirely — but the platform processes live customer payments around the clock, so there was no maintenance window available and zero tolerance for downtime or data loss during the switch.
Our Approach
We planned a phased migration onto a modern, event-driven architecture rather than a single cutover. New services were built alongside the legacy system, with transaction traffic gradually shifted over as each component was validated in production under real load. Every stage kept a rollback path open, so any issue could be reversed without affecting a single customer transaction.
The Results
The migration completed with zero downtime across the entire transition. On the new architecture, transaction processing runs 40% faster than the legacy system, giving Vantage Pay meaningfully more headroom as their customer base keeps growing.
40% faster transaction processing, with zero downtime during the entire migration.
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