Challenge
TOPICA served 2M+ registered learners with extreme traffic peaks during exam season (5x normal load). Single-cloud dependency caused vendor lock-in risk and regional latency for learners in rural Vietnam and Southeast Asia.
Solution
ICTI designed a multi-cloud architecture spanning AWS and GCP with intelligent traffic routing via Cloudflare, edge caching for video content, and auto-scaling groups that spin up 1,000 additional instances within 3 minutes.
- AWS + GCP multi-cloud with Cloudflare intelligent routing
- Video CDN with edge caching — 98% cache hit rate
- Auto-scaling 0 to 1,000 instances in under 3 minutes
- Cost optimization: Reserved + Spot instance mix saving 52%