Metrics, KPIs & North Star Frameworks

What it is

Product metrics measure whether the product is actually delivering value — the discipline is picking metrics that can't be gamed and that genuinely reflect user/business outcomes, not just activity.

Key points

• North Star Metric: a single metric that best captures the core value the product delivers to users (e.g. "weekly active collaborators" for a docs tool) — used to align a whole team around one outcome instead of dozens of disconnected metrics.
• Leading vs. lagging indicators: leading indicators (feature adoption) predict future outcomes; lagging indicators (revenue, churn) confirm what already happened — both matter, but leading indicators are what let a team react in time.
• Vanity metrics (total signups, page views) look good but don't reflect actual value delivered — the standard test is "would this metric going up on its own make me happy, or do I need more context first?"
• Metrics should be tied to a specific decision they'd inform — a metric no one would act differently on is not worth tracking.