product-metrics

How to measure a revealed feature with the four AARS metrics — acquisition, activation, retention, satisfaction — each a percentage of the target audience, with an observable signal, an expanded definition, a justified signal threshold, a target reconciled with the exposure plan, and the events to instrument; how to read them as a funnel, read a retention curve, and diagnose which one is low. Use when defining success metrics or KPIs for a feature, deciding what to instrument, setting activation or retention criteria, reading usage data after a release, or diagnosing why a feature is not being used.