Global Bank Migrates to Azure with Zero Downtime
A major GCC-based bank migrated 200+ applications from on-premises data centres to Microsoft Azure, achieving zero unplanned downtime and a 35% reduction in infrastructure costs.
The Challenge
The bank’s legacy data centres were reaching end-of-life, with escalating maintenance costs and limited capacity for new digital banking initiatives. Regulatory requirements demanded data residency within the region, and the 24/7 nature of banking operations meant zero tolerance for downtime during migration.
200+ applications spanning core banking, CRM, and reporting
Strict data residency and compliance requirements (CBUAE regulations)
24/7 operational mandate with zero tolerance for unplanned downtime
Legacy systems with undocumented dependencies
Quick Facts
- Industry
- Financial Services
- Client
- Confidential
- Location
- UAE
- Key Result
- 35%
OpEx Savings
Our Approach
Discovery & Assessment
Conducted a comprehensive application portfolio assessment, mapping all 200+ applications and their dependencies using automated discovery tools and stakeholder interviews.
Landing Zone Design
Designed an Azure landing zone with hub-spoke network topology, Entra ID integration, and compliance controls aligned to CBUAE regulatory requirements.
Wave-Based Migration
Executed migration in 8 waves over 6 months, starting with non-critical workloads and progressively moving to core banking systems using Azure Migrate and Azure Database Migration Service.
Validation & Optimization
Post-migration, right-sized all instances based on 30-day utilization data and implemented Azure Reserved Instances for predictable workloads.
Technical Highlights
Azure Landing Zones
Enterprise-scale architecture with hub-and-spoke topology and automated management groups.
Terraform IaC
100% of infrastructure defined as code, ensuring repeatable, audit-ready deployments across environments.
Azure Migrate
Automated workload assessment and migration tooling for 200+ applications with dependency mapping.
Azure DevOps
Integrated CI/CD pipelines enabling 60% faster deployment cycles post-migration.
Azure Policy
Automated compliance guardrails enforcing CBUAE regulatory requirements across all subscriptions.
Results & Impact
35%
OpEx Savings
Reduced overall infrastructure spend via FinOps right-sizing
99.99%
Uptime
Zero critical service interruptions during the transition
60%
Faster Provisioning
Cloud-native CI/CD pipelines accelerated deployment cycles
100%
Compliance Score
All CBUAE regulatory controls met from day one
“WinCap delivered a flawless migration that our board initially thought was impossible within the timeline. Their structured approach gave us confidence at every stage.”
CTO
Major GCC Banking Group
Key Takeaway
Migration at scale for financial institutions requires more than just technical shifting. Success was rooted in the Landing Zone foundation — ensuring that security, compliance, and governance were automated before a single production application was moved.
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