One Number to the Board
Thou shalt not present three dashboards to thy board. One number, reconciled across causal MMM, incrementality testing, and incrementality-adjusted attribution, is the only output that survives a CFO’s second question.
Independent Measurement
Thou shalt not let the entity selling thee media also measure it for thee. Independent measurement, causal MMM and incrementality testing run outside the channels they evaluate, is the only credible answer.
Cause Over Touch
Thou shalt not call a touch a cause. Multi-touch attribution tracks who was nearby when a customer converted, but incrementality testing answers the question that matters: what would have happened if you had done nothing?