Definition
First-touch attribution is a model that assigns 100% of the credit for a conversion to the first marketing channel a prospect interacted with. If a caller found you through a paid search ad and later converted, that ad gets full credit, regardless of what happened in between.
Marketers use it to identify which channels generate initial awareness. It answers one specific question: what brought this person to us in the first place?
In call tracking, first-touch attribution connects an inbound call to the original source, whether that is organic search, a display ad, a direct mail piece, or a referral. Without call-level attribution, that connection is invisible. The channel that drove the call gets no credit, and budget decisions get made on incomplete data.
The model has a known limitation. It ignores every touchpoint after the first one. For businesses with longer consideration cycles, that gap matters. A prospect might call three times before booking. First-touch attribution credits only the channel that triggered the first call.
For a deeper look at how attribution works across the full call journey, see Call Attribution.
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