Context

Existing platform couldn't handle peak traffic during sales events, resulting in lost revenue and poor customer experience. Had to migrate from legacy system without downtime, maintain SEO rankings, and support international payments. Implemented a microservices architecture with CDN caching, database sharding, and horizontal scaling capabilities using Kubernetes. Handled 10x traffic increase during Black Friday with 99.99% uptime, reduced page load time by 60%, and increased conversion rate by 35%.