What is a vendor DDQ?
Why every buyer's DDQ is different
A DDQ is what a procurement team assembles when the standard questionnaires do not cover what their business, their regulators and their board actually want to know. It borrows freely from the CAIQ and the SIG, adds sector-specific and firm-specific obligations, and reflects whatever the buyer has been burned by in the past. Two DDQs from the same industry can look nothing alike.
The consequence for vendors: you cannot template your way through a bespoke DDQ. A copy-paste answer that landed in one review will read as unresponsive in the next, because the questions have shifted underneath the wording. Read each DDQ against the buyer, not against your last one.
What they ask about AI now
Where DDQs used to stop at security posture and data handling, they now open a governance section that presumes you have decisions to defend: which models you use, what data those models see, who signed off the deployment, what the human oversight looks like, and how you would show your working if the buyer's regulator asked. The phrase "verifiable evidence" is appearing in DDQs verbatim, and it means what it says — a reviewer wants the artefact behind the answer, not a description of one.
The Answer Library is a good way to see the shape of the answers buyers now expect; treat it as the ceiling of what "good" looks like on a DDQ, not the floor.
The trap of prose answers
The commonest DDQ failure is not a bad answer, it is a long unattached one. Paragraphs describing governance without pointing at anything read as evasion, because there is nothing for the reviewer to check. Attachments — policies, registers, sign-off records — with named owners and dates read as competence, because the reviewer can verify one, believe the rest, and close the section.
The reverse also holds: a short answer cited to a real, sealed document beats a long one that talks around the question. Where the artefact does not exist yet, say so, name an interim control, give a date. That reads as maturity to any reviewer who has seen the pattern before.
Answer it from a record
Import your controls and vendors, answer each question cited to a sealed record, and hold open honestly the ones you cannot yet ground. When the reviewer spot-checks, the citation opens; when a gap is real, the interim control and the date read as maturity, not evasion. This is the motion Hael runs: one record, sealed documents, cited answers, honest gaps.