What Is an Attribution Model? Rules for Splitting Credit

In plain English

Given several interactions before a conversion, the model decides which get credit and how much. Last-touch gives it all to the final one; first-touch to the earliest; data-driven distributes it based on observed patterns.

Changing the model changes every channel's apparent performance without anything actually changing. That is worth remembering before reallocating budget.

What to know

Rules, not truth

Each model is a choice.

Changes channel reports

Substantially.

Compare models

The differences are informative.

Cannot see everything

Offline and private sharing remain invisible.

Why it matters

The useful exercise is comparing two models. Channels that look strong under last-touch and weak under first-touch are capturing demand; the reverse are creating it.

Common mistakes

×Treating one model as the truth.

×Switching models mid-reporting-period.

×Reallocating budget after a model change without noting it.

×Ignoring what no model can see.

FAQs

Which model should I use?

One consistently, understanding what it undervalues.

What does comparing models tell me?

Which channels create demand and which capture it.

WRITTEN BY TARIQ SALLAM

Marketing Consultant. Entrepreneur. Content Creator.

I'm a marketing consultant, entrepreneur and content creator. I help businesses grow through practical marketing, websites, SEO, content and AI.

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