Why Attribution Changes ROAS Decisions
Attribution controls where conversion credit goes. If credit shifts from brand search to paid social, reported ROAS changes even when actual revenue does not.
Model Comparison
| Model | Strength | Risk |
|---|---|---|
| Last Click | Simple and easy to audit | Under-credits upper funnel |
| Data-Driven | Better path-level weighting | Model opacity and platform differences |
| Blended / MER Lens | Captures total efficiency | Can hide channel-level waste |
Operating Framework
- Use platform ROAS for daily optimization.
- Cross-check with blended MER weekly.
- Review attribution model assumptions monthly with leadership.
- Avoid scaling decisions from a single dashboard view.
Run Parallel Measurement Checks
Keep a working model with ROAS, MER, and CAC to avoid misreading attribution noise. If your team mixes metrics, start with the framework in CAC vs CPA vs ROAS.
Related Pages
Attribution to Action Links
Validate attribution insights with execution and profitability calculators.
Get Weekly RPM/ROAS Benchmarks
Use weekly benchmark updates in your account review to decide scale, hold, or pause with confidence.
Includes: break-even guardrails, scenario prompts, and benchmark review steps.
Prefer a direct download? Open the ROAS Decision Matrix page.