Modernizing Virtualization at Hyperscale for a Global Banking Leader

A global banking leader operating thousands of virtual machines across multiple data centers was facing mounting pressure from rising licensing costs, shifting vendor terms, and the operational risk of running at hyperscale on legacy virtualization platforms. As the environment grew, migrating away from legacy licensing without disrupting mission-critical banking operations became an increasingly complex balancing act between cost, compliance, and continuity.

Aziro delivered a vendor-agnostic automation framework that enabled large-scale virtualization migration across ESXi, RHEV, and Hyper-V, with enterprise-grade orchestration and zero unplanned downtime. The result was a shift from a licensing burden that threatened long-term cost efficiency, to a hyperscale operating model built for flexibility, resilience, and control.

As the bank's virtual estate scaled, legacy licensing models and vendor lock-in created growing cost pressure and compliance risk, while the sheer scale of the environment made any migration inherently high-stakes.

Licensing Shift
Industry-wide changes in licensing and subscription terms across major virtualization vendors created unpredictable cost exposure, pushing the organisation to reassess its long-term vendor dependency.

Massive Scale
Nearly one million virtual machines running across global data centers meant that any migration strategy had to work reliably at hyperscale, with no room for manual, one-by-one intervention.

Zero Downtime
As a global banking institution, even minor service disruption carried significant financial, regulatory, and reputational risk, making downtime during migration simply not an option.

"Without a vendor-agnostic, automation-first approach, migrating at this scale would have meant choosing between cost, speed, and reliability, we needed all three."

Aziro engineered a migration framework that decoupled the bank's infrastructure from any single virtualization vendor, enabling automated, large-scale workload movement across ESXi, RHEV, and Hyper-V without compromising uptime or compliance.

Vendor-Agnostic Framework
Aziro built a migration architecture that operates independently of any one hypervisor vendor, giving the bank the flexibility to move workloads across ESXi, RHEV, and Hyper-V based on cost, performance, and compliance needs, rather than being locked into a single vendor's roadmap.

Enterprise-Grade Orchestration
A centralized orchestration layer coordinated workload discovery, dependency mapping, and migration sequencing at scale, ensuring that interdependent systems moved in the right order, with validation checkpoints built into every stage.

Hyperscale Automation
Automated migration pipelines handled workload replication, cutover, and validation across nearly a million virtual machines, removing the need for manual, VM-by-VM migration and enabling consistent, repeatable execution at hyperscale.

• Virtualization Platforms: VMware ESXi, Red Hat Enterprise Virtualization (RHEV), Microsoft Hyper-V
• Automation and Orchestration: Ansible, Terraform, custom migration orchestration engine
• Monitoring and Validation: Real-time workload health checks, automated rollback and validation pipelines
• Infrastructure: Multi-data-center, hybrid on-premises and cloud-ready architecture

The migration didn't just move workloads, it fundamentally changed the bank's cost structure, operational resilience, and long-term vendor flexibility.

$100M+: Projected cost reduction over three years, driven by reduced licensing dependency and optimised infrastructure spend.

~1M: Virtual machines migrated in year one, demonstrating the framework's ability to operate reliably at true hyperscale.

70%: Reduction in infrastructure footprint through workload optimisation and consolidation during migration.

Zero: Unplanned downtime across the entire migration, spanning ESXi, RHEV, and Hyper-V environments.

Aziro helps global enterprises modernise large-scale, legacy virtualization environments by removing vendor lock-in and replacing manual, high-risk migration processes with automated, orchestrated frameworks built for hyperscale. With deep engineering expertise in infrastructure automation, workload orchestration, and zero-downtime migration design, we transform infrastructure risk into long-term operational and financial advantage.

Our teams specialise in building vendor-agnostic migration frameworks, enterprise-grade orchestration layers, and automation pipelines that integrate seamlessly with existing infrastructure. Whether your organisation is looking to reduce licensing costs, eliminate vendor lock-in, or prepare your virtualization estate for the next generation of infrastructure demands, Aziro brings the engineering depth and execution discipline required to deliver measurable, enterprise-scale impact.