Marketing AI Playbook Part 10: Geo Holdout Tests Reveal Meta Over-Attribution by 2-5x
FinanceYF5 · x · 2026-10-09
- Step 10: learn geo holdouts and MMM (Meridian/Robyn); pause Meta spend in 5 matched regions for 4 weeks and compare sales drop vs claimed revenue—platform attribution typically overstates 2-5x.
- Quoted step 9: build 5 behavior-triggered Klaviyo flows (browse, cart, purchase, silence) with a 10% holdout to measure true incremental revenue.
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