Marketing Science

S-Curve vs C-Curve: Which Response Model Fits Your Marketing Channel?

Exploring the mathematical foundations and practical applications of different response curves in marketing effectiveness measurement.

8 avril 2025
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7 min de lecture

Response curves are fundamental to understanding how marketing investments translate into business outcomes. The choice between S-curve and C-curve models can significantly impact your optimization decisions.

Response curves model the relationship between marketing input (spend, impressions, GRPs) and output (sales, conversions, awareness). The two most common forms are:

Start steep and gradually flatten, representing immediate but diminishing returns.

Immediate Response: The first dollar spent generates measurable returns No Threshold Effect: No minimum investment required for impact Continuous Diminishing Returns: Each additional unit provides less benefit

À propos de l'auteur

Cyril Noirot

Cyril Noirot

Lead Data Scientist

Data scientist freelance. Je conçois et déploie des systèmes de décision — prévision, pricing, marketing measurement, optimisation.

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