Product-Market Fit

The moment your product genuinely satisfies a strong market demand, customers love it, retention is high, and people refer others without being asked.

Before product-market fit, growing faster makes things worse, you're scaling a leaky bucket. After it, growth compounds because the product sells itself.

Signs of PMF: Users are disappointed when the product is unavailable. Retention is strong. You receive unsolicited referrals. Your churn rate is low despite low marketing spend.