Product-Market Fit
The stage at which a product satisfies a strong market demand so well that usage, retention, and word-of-mouth grow on their own.
Product-market fit (PMF) is the point where a product clearly serves a real, sizable demand — users adopt it, keep using it, and tell others, so growth starts to feel like it's being pulled rather than pushed. Before PMF, effort leaks away; after it, the problem shifts to scaling.
PMF is felt more than precisely measured, but the signals are concrete: strong retention curves, organic referral, and users who would be genuinely disappointed to lose the product. Reaching it is the real goal of an MVP — everything before it is a search for the fit.
Related terms
MVP (Minimum Viable Product)The smallest version of a product that delivers real value to early users, built to learn from the market with the least effort.RetentionThe measure of how many users keep coming back to a product over time — the clearest signal of whether it delivers lasting value.North Star MetricThe single metric that best captures the core value a product delivers, used to align a whole team's decisions around one number.Product DesignEnd-to-end design ownership of a digital product — from user research and strategy through UX, UI, and shipping — tied to business outcomes.