Your attribution report can't answer the budget question
Why last-click and platform reporting measure activity, not cause, and what to ask instead.
Platforms grade their own homework and last-click credits the final touch. I write about the methods that answer the real question: what would have happened without this spend?

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Why last-click and platform reporting measure activity, not cause, and what to ask instead.
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Short, practical notes on mix modelling, experiments and the data underneath them. Written for the people who have to defend the budget.