Scaling EdTech Lean: How Strategic Technology Choices Enabled 250K Daily Users

This technical case study reveals how strategic architecture decisions and timely infrastructure migrations enabled an EdTech platform to serve 250K daily users with only a $4,200 monthly infrastructure bill. Rather than over-engineering for scale from day one, the team achieved 25x revenue growth through incremental redesigns—switching from expensive Agora streaming to CDN-based HLS for recorded content, moving quiz scoring to Redis, and optimizing the Flutter app from 45MB to 28MB. For startups, the key insight is that informed technology choices (Flutter, PostgreSQL, Cloud CDN) maintained strong unit economics while scaling exponentially over 18 months.