North Star Metrics Definition

North Star Metrics Definition is the practice of identifying a single (or small set of) metrics that best represent the long-term success of a product and its ability to deliver value to users. The North Star metric serves as the guiding light for product decisions, resource allocation, and team alignment. It answers: "What ONE number, if we increase it, indicates we're succeeding?" Examples: Slack's North Star = daily active users (if more people use Slack daily, the product is stickier). Airbnb's = nights booked (if more nights are booked, supply and demand are balanced). YouTube's = watch time (if people watch more, content is engaging and valuable).