Zero-Downtime Cloud Migration
Migrating 50+ legacy applications to AWS with zero business disruption
Project overview
GlobalInsure, a Fortune 500 insurance company, operated 50+ mission-critical applications in aging on-premise data centers. Infrastructure costs exceeded $8M annually, scalability was limited, and disaster recovery was inadequate. They needed cloud migration without disrupting 24/7 operations serving 2 million policyholders.
We executed a comprehensive cloud migration to AWS over 8 months, moving 50 applications, 200+ databases, and 500TB of data with zero unplanned downtime. The new cloud infrastructure is elastic, resilient, and costs 55% less to operate.
The challenge
Zero Downtime Required: 24/7 operations couldn't tolerate service interruptions
Legacy Applications: 20-year-old applications with undocumented dependencies
Data Volume: 500TB of sensitive customer data requiring secure transfer
Regulatory Compliance: HIPAA, SOC 2, and state insurance regulations
Skills Gap: Internal team lacked cloud expertise for management
Our solution
Migration Strategy: Phased approach using 7R framework (rehost, replatform, refactor)
Data Transfer: AWS Snowball and Database Migration Service for secure transfer
Parallel Running: Applications ran in parallel (on-prem + cloud) during cutover
Infrastructure as Code: Terraform for reproducible, version-controlled infrastructure
DR & Backup: Multi-region deployment with automated backup and failover
Training & Support: Comprehensive cloud training for internal teams
Measurable results
Unplanned downtime during migration
Reduction in infrastructure operating costs
Faster deployment times for new features
Uptime achieved post-migration
Related case studies
Scalable SaaS Platform for E-Learning
Building a cloud-native, multi-tenant platform serving 50,000+ concurrent users
Financial Process Automation with RPA
Automating invoice processing, reducing manual work by 80%
Next-Gen Mobile Banking App
Native iOS/Android app with biometric security serving 500K+ users
Let's build something that actually moves your business.
Tell us what you're trying to solve. We'll come back with a plan, a timeline, and a straight answer on cost.