In 30 seconds
- Customers want it, use it repeatedly and recommend it.
- Signals: retention, organic growth, strong survey responses.
- Before fit, focus on learning; after it, focus on scaling.
What it means
Investor Marc Andreessen popularized the term in 2007, describing it as being in a good market with a product that can satisfy that market. In practice, demand pulls the product forward.
Signals to watch
- Retention: a group of users keeps coming back over months
- Organic growth: referrals and word of mouth
- Survey test: a widely used benchmark asks how users would feel if they could no longer use the product; around 40% answering "very disappointed" is often taken as a strong signal
Before and after
| Before fit | After fit |
|---|---|
| Experiment and learn | Scale and optimize |
| Small, fast MVPs | Reliability and growth |
| Pivot if needed | Expand to adjacent markets |
Myth vs reality
Myth · Fit is reached once and kept forever.
Reality · Markets shift; fit can be lost.
Myth · Lots of sign-ups means fit.
Reality · Retention matters more than sign-ups.
Myth · Marketing can create fit.
Reality · Marketing amplifies fit; it can't replace it.
FAQ
How long does it take to reach fit?
Often many months or years of iteration.
Can internal products have fit?
Yes; voluntary, repeated use is the signal.
What if we can't find fit?
Revisit the problem, the customer or both: a pivot.