Attribution: who gets credit?

Advanced⏱ 12 min
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Customers touch many channels before converting. Understand attribution models, their limits and practical approaches.

In this lesson you’ll learn to

  • I know the main attribution models
  • I compare platforms with CRM data
  • I ask how customers heard about us
  • I track blended CAC

Models

• Last click — all credit to the final click.

• First click — all credit to discovery.

• Data-driven — credit based on observed paths (default in GA4 and Google Ads).

Limits

Privacy changes, cross-device journeys and offline conversations mean no model is perfect. Platforms tend to over-claim credit.

Practical approaches

• Compare platform data with CRM revenue.

• Ask “How did you hear about us?” on forms and calls.

• Run holdout or geo tests for big channels.

• Watch blended metrics: total spend ÷ total customers.

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