Requirements management (specification quality & traceability)

Ask five people on a team where "the real requirement" for a shipped feature lives, and you'll often get five different answers — a ticket, a Slack thread, someone's memory of a hallway conversation. Requirements management is the discipline of having one true, traceable answer, precise enough that it can actually drive what gets built rather than just describe it afterward.

Where most organizations start (Nascent)

Specifications begin as informal tickets and docs with no consistent structure, and tracing a shipped feature back to its original source is manual at best, absent at worst. The first real step isn't precision — it's eliminating competing truths: one shared system of record, a minimum structure every material item follows, with source, intended user context, expected behavior, and delivery status all findable without asking the original author.

Where the real gains happen (Modeled → Integral)

The meaningful shift is raising specification quality until routine requirements can directly generate code, prototypes, or tests with minimal interpretation — not by writing more words, but by introducing explicit schemas, precise acceptance conditions, and testable outcomes, piloted on bounded classes of work first. Generated artifacts inherit traceability automatically once this lands; the specification remains the required starting point, but it's now genuinely load-bearing rather than descriptive.

What the top of the curve actually looks like (Telemetric)

At full maturity, generation becomes sequence-agnostic: work can start from a specification, a prototype, or a test, and the system produces a coherent, traceable set of artifacts regardless of which one came first. The organization no longer cares which artifact initiates the work — only that intent and traceability survive the whole path, in either direction.

Why this dimension matters

D4 is where the shared market/persona/positioning intelligence (D1–D3) actually becomes something an engineering team can build against. A brilliant market read that never becomes a precise, traceable requirement never actually reaches the codebase — this dimension is the bridge, and a weak bridge quietly caps everything downstream of it.

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Drafted from the SDLC model's real locked content — including the transition and verification notes now folded into ai_native_sdlc_maturity_model.md itself (2026-07-27). D4 carries no open review flag.