A north star metric (NSM) is the primary metric that measures success for a company. It is the primary [[KPI]] that best aligns with the company's mission statement. It is the [[one metric that matters]] of the [[Lean Analytics]] approach. For Spotify, it might be *time spent listening to music*. For Google, *search volume*. For Netfilx, *hours streamed*. If the NSM improves, the value of the company should also improve. An NSM can be very helpful for aligning product KPIs and the KPIs of teams and employees within the company. Their KPIs should drive improvements to the NSM for the company.