Migration of an on-premise patient management system to AWS with zero-downtime cutover.
A regional healthcare provider with 12 clinical facilities was running a 10-year-old on-premise patient management system. The aging infrastructure was creating security vulnerabilities, compliance risks and escalating maintenance costs. Staff were relying on paper backup processes during frequent system outages.
We designed a multi-AZ AWS architecture with HIPAA-aligned security controls, including encryption at rest and in transit, VPC isolation, and comprehensive audit logging. The migration used a parallel-run strategy — the new cloud environment ran alongside the legacy system for 6 weeks, with data continuously synchronised until validation was complete.
The cutover was executed with zero clinical downtime. The new system processes patient records 3x faster, supports telehealth integrations, and maintains 99.9% uptime. Post-migration support costs reduced by 45% compared to the legacy on-premise infrastructure.
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