Product-market fit is the state in which a product meets the needs of a specific market so well that customers adopt it, keep using it and recommend it without heavy persuasion.
Why it matters
Before fit, growth spending mostly leaks away through churn. After fit, marketing and sales become far more efficient because retained customers repay the cost of acquiring them. Many teams treat reaching it as the milestone that decides whether to scale or change direction.
Example
A scheduling tool signs up 1,000 users in a month, but only 8 percent are still active after 90 days. The team narrows the product to dental clinics, and retention in that group rises to 55 percent with customers asking for more features. That retention is a stronger fit signal than the sign-up count.
Common mistakes
- Treating a launch spike or press coverage as proof of fit.
- Measuring only sign-ups and ignoring retention and referrals.
- Declaring fit based on a handful of friendly early customers.
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