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Evidence tier

One of four levels of evidence strength: a marketing claim (Tier 1, unfalsifiable), a self-attestation (Tier 2, specific and attributable, but the vendor grading itself), a third-party audit or certification (Tier 3, independently verified), and the deployer's own exercised audit right (Tier 4, strongest, no intermediary).

Defined in 2 GAGE programs, which carry 2 distinct definitions of it. The wording above is taught in Certified AI Transformation Professional (CATP).

How each discipline defines it

The same term does different work depending on who is using it. These are the definitions as each program teaches them, unedited.

Certified AI Transformation Professional (CATP)

One of four levels of evidence strength: a marketing claim (Tier 1, unfalsifiable), a self-attestation (Tier 2, specific and attributable, but the vendor grading itself), a third-party audit or certification (Tier 3, independently verified), and the deployer's own exercised audit right (Tier 4, strongest, no intermediary).

Certified AI Data Governance Professional (CADGP)

A classification applied to a finding during an outside-in audit, ranked from strongest to weakest: contractual attestation, public specific claim, direct observation, public unspecific claim, and genuine unknown, used to keep a report's confidence level honest and checkable.

Where it is taught

The exact lessons this term appears in. The first module of every program is free with a free account.

Where it shows up at work

A definition is where Evidence tier starts. The lessons above teach it inside the competencies below, which are what job descriptions ask for and what the GAGE credential records. Every link here is drawn from the same careers map that builds a role's readiness check.

Tiers vendors by use and impact, requests evidence instead of promises, tests in the customer's context, and plans monitoring and exit.

One lesson on this page teach it as a primary outcome.

Buying AI wellBusiness and Transformation

Writes requirements, runs a fair evaluation, pilots within limits, and refuses a demo as evidence.

One lesson on this page teach it as a primary outcome.

Turns controls into enforceable obligations: data use, change notice, audit rights, incident duties, subcontractors, IP, exit and deletion.

One lesson on this page teach it as a primary outcome.

Roles that hire for it

Each role page shows the full competency set, what the seat decides, and a readiness check against your own evidence.

How job descriptions say it

Postings rarely use the textbook word. These are the phrases the careers map reads as asking for the competencies above.

“vendor risk”“third-party risk”“third party ai”“due diligence”“vendor assessment”“supply chain”

Where the frameworks place it: NIST AI RMF GOVERN 6 and MANAGE 3; ISO/IEC 42001 Annex A supplier controls; CISA software acquisition guidance; GDPR Article 28.

One interview question about it

A business unit wants to buy an AI tool next week. What do you ask the vendor, what evidence do you require, and what would make you say no?

Asked of candidates for ai vendor due diligence and third-party risk. Answering it in your own words is exactly how a GAGE topic is passed, and the credential records the pass where an employer can check it.

If you come from another field

Some backgrounds already carry this competency, and the readiness check gives credit for it.

Terms it appears with

Not an alphabetical neighbourhood: these are the terms taught in the same lessons, ranked by how often they appear together.