KPIs without targets are just metrics. The difference matters because targets create accountability. Saying 'we will track leads' is passive. Saying 'we will generate 500 MQLs at under $45 each by end of Q3' is a commitment that drives daily decisions about where to spend, what to optimize, and when to pivot.
Good KPI targets come in three layers. Leading indicators (impressions, clicks, engagement rate) tell you if the campaign is gaining traction. Mid-funnel metrics (leads, signups, demo requests) tell you if interest is converting to action. Lagging indicators (pipeline, revenue, ROI) tell you if the campaign delivered business value.
Each KPI needs a measurement method. Specify the tool (GA4, CRM, ad platform), the reporting cadence (weekly, bi-weekly), and who owns the number. When KPI ownership is ambiguous, nobody optimizes for it.