---
title: Programmatic Attribution — RGM Training
url: https://realgrowthmatters.com/training/programmatic-ctv/programmatic-attribution/
updated: 2026-06-10
source_html: https://realgrowthmatters.com/training/programmatic-ctv/programmatic-attribution/
---

[Home](../../../index.html) › [Training](../../index.html) › [Programmatic / CTV](../index.html) › Programmatic Attribution

RGM° · Training

# Programmatic Attribution

Uniquely hard. Post-cookie reality, models, view-through, clean rooms, MMM, incrementality.

### What you will learn

1. [Why programmatic attribution is uniquely hard](#why)
2. [The post-cookie reality](#reality)
3. [Attribution models](#models)
4. [View-through methodology](#view-through)
5. [Clean room measurement](#clean-rooms)
6. [MMM integration](#mmm-prog)
7. [Incrementality for programmatic](#incrementality)
8. [Advanced playbook](#advanced)
9. [Common mistakes](#mistakes)
10. [Checklist](#checklist)

## Why this is uniquely hard

Programmatic spans many surfaces (display, video, audio, CTV), many devices (mobile, desktop, TV), and operates within shifting identity rules. Single attribution methodology doesn't suffice; triangulation is mandatory.

## Post-cookie reality

- Third-party cookies gone or degraded.
- Identity stitching via Universal IDs (UID 2.0, ID5, RampID).
- First-party data activation grew.
- CTV measurement requires new methodology.
- Walled garden inventory black-box.

## Attribution models

- **Last click.** Severely underweights display/CTV.
- **Multi-touch.** Possible where identity supports; degraded.
- **View-through.** Standard for display/CTV.
- **Brand lift.** For awareness-focused.
- **MMM.** Aggregate; works without identity.
- **Incrementality.** Causal inference.

## View-through

- Conversion within window after view.
- Window typically 1–30 days depending on category.
- Doesn't prove causation; suggests influence.
- Discount factor often applied to view-through credit.
- Verification partners measure viewability before credit.

## Clean room measurement

- Amazon Marketing Cloud (AMC).
- Google Ads Data Hub.
- Snowflake Data Clean Rooms.
- Habu (acquired by LiveRamp).
- Cross-platform measurement without raw user-data exchange.
- Mature for AMC; emerging for others.

## MMM for programmatic

- Aggregate weekly impressions and spend by channel.
- Model contribution to outcomes.
- Calibrate with incrementality.
- Bayesian frameworks (Robyn, LightweightMMM).
- Vendor solutions (Recast, Haus, Northbeam).

## Incrementality

- Geo holdouts for programmatic.
- User-level holdouts where DSPs support.
- Brand lift studies.
- Conversion lift studies.
- Quarterly cadence ideal.

## Advanced playbook

- Triangulation: platform-reported + GA4 + MMM + incrementality.
- View-through with discount factor.
- Clean room measurement where supported.
- Bayesian MMM annually with calibration.
- Incrementality quarterly on top channels.
- Identity strategy (Universal IDs).
- First-party data activation in DSPs.
- Cross-screen measurement methodology.
- Stakeholder communication of measurement limits.
- Annual measurement methodology review.

## Common mistakes

- Last-click attribution applied to display/CTV.
- View-through credited without discount factor.
- Single methodology trusted as truth.
- Clean rooms ignored.
- MMM not built.
- Incrementality not tested.
- Cross-screen attribution naive.
- Identity strategy missing.
- Stakeholders not educated on limits.
- Annual methodology review skipped.

## Operating checklist

- Triangulation across methodologies
- View-through discount factor
- Clean room measurement where supported
- MMM annual rebuild
- Incrementality testing quarterly
- Identity strategy aligned
- First-party data activation
- Cross-screen measurement
- Stakeholder education on limits
- Annual methodology review

## Sources and further reading

- RGM Attribution & Measurement training series
- Amazon Marketing Cloud documentation
- Google Ads Data Hub documentation
- Snowflake Data Clean Rooms
- LiveRamp Habu
- Recast, Haus — MMM vendors
- Northbeam, Triple Whale — cross-channel attribution
- iSpot.tv CTV measurement
- Innovid CTV measurement
- IAB measurement standards
- AdExchanger measurement coverage
- Marketing Brew measurement coverage

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Part of the [Programmatic / CTV](../index.html) series.