Term
North Star Metric
The single metric that best captures the core value a product delivers to its customers — the one number every team can rally around.
A North Star Metric (NSM) is the one metric a company picks to represent the core value its product creates. It's a deliberate simplification — picking a single number forces alignment and clarity, even at the cost of losing nuance.
Canonical examples
- Airbnb: nights booked
- Spotify: time spent listening
- Slack: daily active users in workspaces with 2,000+ messages sent
- Stripe: total payments processed (volume in dollars)
- Facebook (early): monthly active users; later: time spent
What these have in common: each captures delivered value, not just usage. Spotify could optimize for app opens — but if you open the app and skip 8 songs in 2 minutes, you didn't get value. Time spent listening captures the actual value delivery.
What makes a good NSM
Three tests:
- It measures value delivered, not activity. Page views is activity; users finishing a session having completed their goal is value.
- It moves leading indicators of business success. If the NSM grows, revenue should grow with a lag.
- It can't be gamed by short-term tactics. A team optimizing the NSM for one quarter shouldn't be able to damage the product to hit it.
Common mistakes
- Picking a vanity metric — registered users, app downloads — that doesn't correlate with value
- Picking a metric the team can game — like "sessions per day", which a notification spam strategy can inflate
- Picking too many — once you have 3+ North Star metrics, you have no North Star
NSM vs OKR vs KPI
- An OKR is a quarterly bet on changing something
- A KPI is an ongoing health metric for a function
- A North Star Metric is the single most important KPI — the one above all others
A company has many KPIs, a few OKRs per quarter, and exactly one North Star. The NSM is durable; OKRs change quarterly.