Most Marketing Organizations Cannot Tell You What Actually Worked
Last-click attribution claims credit for revenue that would have happened anyway. Multi-touch attribution decomposes by activity, not by causation. Vendor-supplied ROAS over-reports because the vendor is the one supplying it. The result is a marketing organization that is busy, expensive, and structurally unable to learn from its own spend.
Marketing engineering replaces this with causal measurement at the budget allocation level: Bayesian MMM, incrementality experiments, and a unified attribution architecture that survives identity loss. The output is a system that compounds, not a campaign that fires and dies.