What Is First-Touch Attribution?

First-touch attribution credits a conversion to the channel that first brought the visitor — the newsletter that introduced you, not the branded search that closed you three weeks later. It answers marketing's discovery question: which channels create demand, as opposed to harvesting it.

How it works mechanically

On a visitor's very first pageview, the analytics stores their arrival context — UTM parameters, referrer, landing page — permanently on the visitor record. Every later conversion event (signup, payment) inherits that context. No cookies required: this is first-party data on a first-party record, which is why first-touch survives the cookieless era intact.

Where first-touch shines

• Budget questions about awareness channels: content, podcasts, communities, newsletters — the channels last-touch systematically robs.
• Startups with simple journeys (one or two channels per customer), where model sophistication adds noise, not signal.
• Revenue reporting: 'this channel introduced customers worth €X' is a clean, auditable sentence (the SaaS implementation).

Known blind spots

• It under-credits closers: the retargeting ad or comparison page that sealed the deal gets nothing. (Mirror image of last-touch, which robs the openers.)
• Daily-rotating cookieless identifiers mean a researcher returning weeks later may register a fresh first touch — in practice, identify() at signup re-anchors the journey for the visitors who matter commercially.
• Long multi-channel journeys eventually deserve multi-touch consideration — when you have the volume to argue about it.

Practical default: first-touch for channel budgets, plus the journey timeline when you want the full story of any individual conversion. Model debates are a luxury; consistent capture is the necessity.