0–39: Low maturity
On these answers, the marketing budget is a faith-based line item: allocated by history, measured by the platforms selling the media, and defended by narrative. That is survivable in good years and the first casualty in a downturn, precisely because nobody can prove what would be lost.
40–59: Developing maturity
Pockets of rigour exist, usually in digital channels, surrounded by legacy habits in media, creative or agency management. The risk is asymmetric scrutiny: the measurable channels get optimised while the largest, least measurable spend escapes examination.
60–79: Moderate maturity
This is a function with real commercial machinery: economics understood, experiments running, budgets that move. The typical residual weakness is people-dependent: the discipline lives in a strong CMO or analytics lead rather than in the operating model, and departs with them.
80–100: Stronger maturity
These answers describe marketing run as a commercial discipline, with evidence flowing and money moving accordingly. The danger at this level is optimisation lock-in: a machine tuned beautifully for the current model can be measuring its way past a market shift.