Hybrid Cloud Architecture for Enterprise Banking Platform
Financial Services
What They Were Facing
SecureVault's technology landscape was fragmented across on-premises mainframes, two cloud providers, and multiple SaaS applications with no unified architecture. Data was trapped in silos, APIs were built ad-hoc with no governance, and the bank's digital transformation initiatives were stalled by an inability to integrate new capabilities with legacy core banking systems.
How We Solved It
AQBEE designed a hybrid cloud architecture spanning AWS, Google Cloud, and on-premises systems, unified through a MuleSoft API management layer. Kubernetes clusters on both AWS (EKS) and GCP (GKE) were managed through a consistent Terraform-based infrastructure-as-code approach. Salesforce served as the customer engagement layer with Financial Services Cloud, while MuleSoft provided API governance, rate limiting, and a developer portal for internal and partner API consumers. The architecture supported data residency requirements by keeping sensitive data on-premises while leveraging cloud services for analytics, AI, and customer-facing applications. All components were deployed with zero customer-facing downtime.
The Impact
Completed the entire hybrid cloud migration with zero customer-facing downtime using blue-green deployment strategies and phased cutover.
Reduced total infrastructure costs by 50% through right-sizing workloads across cloud and on-premises environments with automated scaling.
Created a single governed API layer across all environments, enabling 40+ internal teams and 12 partner organisations to consume services through a self-service portal.
“No one else we spoke to understood how to bridge our legacy mainframes with modern cloud services without ripping everything out. AQBEE's hybrid approach let us modernise incrementally while keeping our core banking stable. The unified API layer has been transformational — our partners can now integrate in days instead of months.”
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