đź“š Tier 3 - Good to KnowID: holdoutGroups
Holdout Groups
Control groups deliberately not shown ads in lift experiments
In Simple Words (Zero Jargon):
Control groups deliberately not shown ads in lift experiments
Why It Is Critical
Holdout groups are control audiences or geographic regions intentionally withheld from ad exposure. Comparing conversion rates between exposed and holdout groups isolates the true incremental lift from organic baseline demand.
What You Get: The control group mechanism that makes incrementality testing possible - the cleanest available method for isolating advertising’s causal impact.