What the Function Maintains
Per AI capability: why this tool, why this configuration, why this control — articulated in capability terms, not vendor names.
One-Page Posture Statement Row
The Auditor's Question
"Show me why you chose this approach and how you would explain it without naming the vendor."
Editorial Framing
Methodology transparency is Element 2 because it protects the function from vendor lock-in and model drift simultaneously. A function that can describe its methodology in capability terms — not vendor names — can switch vendors without rebuilding the methodology. A function that has versioned its methodology against the current model version knows when drift triggers a re-evaluation.
Evidence Artefacts
- Methodology document per capability
- Version-pinned methodology (mapped to model version)
- Vendor-agnostic capability descriptions
- Configuration record with rationale
Common Failure Modes
- Methodology articulated in vendor-product terms ("we use [vendor]") rather than capabilities
- Methodology unversioned — drift detection becomes impossible
- Configuration rationale undocumented — the team knows but cannot articulate