A north star metric is the single measure that best captures the value your product delivers to users — the number that, if it grows, means the business is genuinely working. It aligns scope, marketing, and iteration around one definition of success.
The right metric counts delivered value, not activity around it.
Pick the north star before launch and instrument it from day one. Every scope debate gets easier: does this feature move the metric, or just the roadmap?
Practical answers
Yes — as the product matures or the model shifts, the value definition sharpens. Changing it quarterly, though, means you never had one.
KPIs measure parts of the machine; the north star measures whether the machine produces value. Most teams need both, but only one number leads.
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