North Star Metric

A good one measures delivered value, leads revenue rather than lagging it, and is something your product team can actually move. Spotify's 'time spent listening' and Airbnb's 'nights booked' are classic examples because each captures the moment a customer gets what they came for. If your metric can climb while customers quietly churn, it fails the test.

A KPI is any indicator you track to gauge a slice of the business, and you might have dozens. The North Star Metric is the single KPI you elevate above the rest as the one the whole team optimizes for. Think of the North Star as the headline and other KPIs as the supporting inputs that feed it.

Start from the core value customers actually pay for, then find the action that proves they got it. Test candidates by asking whether the number can rise while customers churn. If it can, reject it. Pick the one that, if it doubled, would clearly mean the business is healthier, not just noisier.

Yes, but expect it to change. Before product-market fit, your North Star is often a retention or activation signal that tells you whether anyone keeps coming back. It matters more here than later, because it is the clearest build-or-kill read you have when revenue is still tiny.

It can, but it is usually a poor choice early on because revenue is a lagging result of value delivered. A leading value metric, like weekly active accounts hitting a usage threshold, moves first and tells you sooner whether a change is working. Revenue then follows the value metric, which is the order you want.

Rarely once it is right, because the point is sustained focus, but do revisit it when your stage shifts. A pre-PMF activation star may give way to a retention or expansion star after you find fit. Switching it every quarter is a sign you never picked a real one.