Marketing Science5 min read

ROI Is Not Enough. You Need Time-to-ROI.

Two initiatives can show the same ROI and still deserve very different decisions. The missing variable is time-to-ROI: how fast the initial investment is recovered.

Cyril Noirot
Lead Data Scientist
March 18, 2026

About the author

Cyril Noirot

Cyril Noirot

Lead Data Scientist

Freelance data scientist. I design and ship decision systems — forecasting, pricing, marketing measurement, optimization — for teams making high-stakes calls.

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