A North Star Metric is the one number a company chooses to represent the core value customers get from its product. It aligns teams around sustainable growth rather than vanity numbers: the idea is that if this metric rises for the right reasons, the business follows. Examples include nights booked, messages sent, or weekly active teams.
A good North Star sits at the intersection of customer value and business value. It is not revenue (a result, not a cause) and not a raw activity count that can be gamed. It should be a measure that only rises when customers genuinely get more value.
The risk is treating the North Star as the only metric. It works as a rallying point and a tie-breaker, but it needs a small set of guardrail metrics around it so teams do not pump the headline number while quietly harming retention, margin, or trust.
Spotify uses time spent listening; Slack has used daily active teams sending messages. Both rise only when the product is genuinely used.
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