Experience
Layer 1Employee web appHR admin console
Product logic
Layer 2Question routingEscalation serviceTask progress
AI layer
Layer 3Retrieval over approved sourcesConfidence + refusal policy
Data
Layer 4Knowledge documentsAnswer logOnboarding tasks
Engineering decision required
Layer 5Vector store choiceAuth providerHR system integration
Scope of this view
This architecture describes product capability boundaries implied by the PRD. It does not choose frameworks, databases or hosting — those remain engineering decisions.
Open questions blocking technical design
- PRD section "Acceptance Criteria" is empty — required before generation.
- Unresolved gap: Problem Evidence — You cited qualitative sources, but no numbers yet. Add frequency or cost so severity is arguable with data.
- Unresolved gap: Success Metrics — Define measurable outcomes that indicate whether the product solves the problem.
- Unresolved gap: Non-Goals — Clarify what this product will explicitly NOT solve.