PMF (Product-Market Fit)
The degree to which a product satisfies strong market demand and resonates with target customers.
Definition
Product-Market Fit (PMF) occurs when a product meets strong market demand. It means you've built something that people want, need, and are willing to pay for. Achieving PMF is often considered the most important milestone for early-stage startups before scaling growth efforts.
Signs of Product-Market Fit
Strong Customer Demand
Customers actively seek out your product
High Retention
Users keep coming back and using the product
Word-of-Mouth Growth
Customers recommend to others organically
Willingness to Pay
Customers pay without excessive convincing
Measuring PMF
- Sean Ellis Test: 40%+ users would be "very disappointed" without product
- Net Promoter Score (NPS): Above 50 indicates strong PMF
- Retention Curves: Flattening retention curves
- Organic Growth: Consistent growth without heavy marketing spend
Real-World Example
Slack's PMF Journey: From gaming to workplace communication
Slack pivoted from a gaming company to workplace communication when they noticed internal teams loved their communication tool more than their games.