Glossary

PMF

Product-Market Fit — the stage where a product reliably satisfies strong market demand.

Why it matters

Business and delivery impact.

Before PMF, speed of iteration matters more than polish; after PMF, consistency and scale matter more.

How to measure

Proof you can track.

Retention curves, Sean Ellis survey score and organic growth rate.

Example

What it looks like in practice.

A startup pivoting its UI three times before finding the workflow that drives daily active usage above 40 percent retention.

Keep the context connected.