The Problem
A fintech startup wanted to build a peer-to-peer payment app for the Vietnamese market. Limited budget, needed to go-to-market as quickly as possible.
MVP Strategy
Week 1-2: Discovery & Design
- Interview 20 potential users
- Identify core features: send money, receive money, transaction history
- Wireframe → High-fidelity mockup (Figma)
- Tech stack decision: React Native + Node.js + PostgreSQL
Week 3-4: Core Development
- Authentication (phone number + OTP)
- Wallet system (deposit, withdraw, transfer)
- Basic UI implementation
Week 5-6: Integration & Testing
- Payment gateway integration (VNPay)
- KYC verification flow
- Security audit
- Load testing (target: 1000 concurrent users)
Week 7-8: Launch Prep
- App Store / Play Store submission
- Monitoring setup (Sentry, Datadog)
- Customer support system
- Soft launch with 500 beta users
Results
- Time to market: 8 weeks (from idea to production)
- Cost: $45,000 (team of 4)
- Beta users: 500 → 2,000 in the first month
- Crash rate: < 0.1%
Lessons Learned
- Don't over-engineer — YAGNI (You Ain't Gonna Need It)
- Feature flags — deploy fast, rollback easy
- User feedback loop — release weekly, collect feedback daily
- Technical debt is OK — but must track and plan to repay
Product
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