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Afzal Shaikh
Afzal Shaikh

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Why AI-assisted SDLC fails at scale: missing design-time authority

AI tools have made individual contributors faster.
They have not made enterprise delivery safer.

In a recent modernization program, we used AI for:

  • Requirement extraction from legacy code
  • Service decomposition suggestions
  • Test case generation

All worked — locally.

What failed was global consistency.

Example:
An architectural decision explicitly externalized eligibility logic for regulatory change.
That constraint existed in design documents.
It was not enforceable during AI-assisted development.

Six sprints later:

  • Generated services re-embedded the logic
  • Tests validated behaviour, not architectural intent
  • Audit required explanation that no longer existed

The issue wasn’t AI accuracy.
It was absence of design-time authority at runtime.

What corrected this was enforcing a system-level rule:

  • Architecture decisions became executable guardrails
  • AI agents operated inside those constraints
  • QE derived scenarios from the same decision lineage

At SDLC scale, intelligence without authority increases risk.
Deterministic execution under architect-defined guardrails reduces it.

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