What is KPI?
KPI, key performance indicator, is the metric elected as the thermometer of a goal. It is not just any number, but the one that answers the business question: for growth, the weekly follower balance; for sales, link clicks and contacts generated; for authority, saves and shares. An account should have few KPIs, two or three, reviewed each period. The rest are supporting metrics, useful to understand why, but not to decide.