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The four-tier commercial measurement governance framework
A structural allocation protocol matching measurement rigor to channel scale and statistical viability.
| Tier & Scale | Applicable Channels | Mandated Measurement Methodology |
|---|---|---|
| Tier 1: High scale | Display, social or paid search where volume and geography support testing | Randomized geo-holdouts and ghost ads: Measure incremental cost per acquisition; do not let platform attribution govern alone. |
| Tier 2: Macro mix | Brand, CTV, podcast and other aggregated awareness channels | Calibrated Bayesian media mix modeling: Use time-series models anchored by periodic experimental evidence where feasible. |
| Tier 3: Low volume | B2B pipeline, account-based marketing, niche campaigns or long-cycle outcomes | Unit-economic payback bands: Govern contribution margin and payback, and use causal designs when their precision and cost are acceptable. |
| Tier 4: Defensive | Branded search and bottom-funnel retargeting | Measured defensive restrictions: Use exclusions, bid tests and frequency or recency caps set as experiment parameters. |
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Reference & Evidence
Source: Author's synthesis of the cited econometric literature.
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