Incrementality tests for ads
Measure whether your ads drive results that would not have happened anyway. Fiera Incrementality helps paid media teams choose the right test, design it, and read it:
Skills 5 in the ChatGPT listing
Geo test design Design a geo experiment (geo lift, matched market, regional holdout, go-dark, holdback or heavy-up) from a CSV of KPI by region and day. Geo test readout Analyze a finished geo experiment or regional holdout from a CSV of KPI by region and day. Incrementality planner Explain incrementality and choose how to measure whether an ad channel, campaign type or budget change drives incremental results, then plan the test. Lift result review Review an incrementality or lift result someone else produced, such as a Meta or Google lift study report, a vendor's geo test, an agency deck, or an internal claim that a channel is or is not incremental. Quick incrementality Get a directional, low-effort read on incrementality without a formal experiment. 
Ahrefs#65