Attribution

Quick definition

Attribution is the practice of deciding which marketing touchpoints, such as an ad click, an email or an organic search visit, receive credit for a conversion, and how much credit each one gets. The rules that make this decision are called an attribution model.

Why attribution matters

A customer rarely converts after a single interaction. They might see a social ad, search for the brand a week later, open an email and finally buy after a direct visit. Attribution decides which of those touchpoints a report credits, which in turn shapes which channels look like they work and where the budget goes.

Common attribution models

  • Last-click: all credit goes to the final touchpoint before the conversion.
  • First-click: all credit goes to the first recorded touchpoint.
  • Linear: credit is split equally across every recorded touchpoint.
  • Time decay: touchpoints closer to the conversion receive more credit.
  • Position-based: the first and last touchpoints receive the most credit and the rest is shared among the middle ones.
  • Data-driven: credit is assigned by a statistical model trained on conversion paths. Availability and method depend on the analytics or advertising platform.

What attribution can and cannot tell you

Attribution reports describe the touchpoints that a tool was able to record. Cookie restrictions, consent choices, cross-device journeys and offline interactions all create gaps, so attributed numbers are best treated as an informed estimate rather than a complete record.

Platforms also use different default models and lookback windows, which is why the same campaign can show different results in different reports.

Example

A shopper clicks a paid social ad on Monday, opens a promotional email on Wednesday and buys after clicking through that email on Friday. Under last-click attribution, the email receives 100% of the credit. Under a linear model across those two recorded touchpoints, the ad and the email each receive 50%.

Related marketing terms

Related KPIs

Related tools

Campaign URL Builder

Marketing

Attribution can only credit a campaign if its visits are tagged. The builder adds campaign parameters to your links; it does not choose or apply an attribution model.

UTM Analyzer

Marketing

Paste a tagged link to see which parameters it carries and spot gaps that would weaken attribution. It analyzes one URL, not your reports.