Payvault Technologies was running a monolithic Python application on a single bare-metal cluster, hitting capacity limits during festival traffic peaks and burning ₹38L/month on infrastructure. Previous migration attempts failed because of payment-compliance constraints.
We re-platformed to AWS EKS with microservices, implemented Karpenter-based autoscaling, and built a multi-AZ event-driven payments pipeline. Migration ran wave-by-wave over 14 weeks with feature-flag-controlled cutover, zero customer-visible impact, and continuous PCI-DSS compliance throughout.
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