E-commerce Platform Scales to 10M Users
Challenge
Legacy monolithic application could not handle rapid growth. Site crashed during sales events, losing $50K+ per hour.
Solution
Migrated to microservices architecture on AWS with auto-scaling, Redis caching, and CDN. Implemented queue-based order processing.
Results
- 99.9% uptime during Black Friday (previously 92%)
- 10M+ users handled simultaneously
- 200ms average page load time (down from 3.5s)
- $2M+ additional revenue from eliminated downtime
- 70% reduction in infrastructure costs

