Any documented action, commitment or output from the buyer that confirms intent, engagement or progression in a buying decision — distinct from seller opinion about how the deal feels.
Also known as:
buyer proof, buyer commitment, deal evidence
In complex B2B sales, most deals that slip or go to no decision are lost at the evidence layer, not the relationship layer. The buyer appeared engaged but never committed. The seller advanced the deal on optimism rather than documented buyer action. Buyer evidence is the discipline that separates real pipeline from inflated pipeline.
Buyer evidence is present when deal notes, CRM entries and forecast conversations reference specific buyer actions: an agreed mutual action plan, a confirmed next step with a date, a named champion who has moved something internally, a completed evaluation step, a documented business case review.
Advancing deals on positive sentiment is the standard pattern. The buyer took a call, seemed interested, asked good questions. None of that is evidence. Evidence is what the buyer did, not how they made the seller feel. Deals that move without evidence stall or slip at later stages.
Buyer evidence is a core inspection criterion in the Closing OS. Deal reviews ask: what has the buyer done? What have they committed to? What is documented in the CRM? If the answer is 'they seem keen,' the deal is at risk and the stage may need to be revisited.
Bring one pipeline, forecast or GTM problem. 60 minutes, operator-grade diagnosis, no pitch.