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05 · Drill 03 — Trade-off Defense

Status: Outline. Body fills in the scheduled course week. Voice: principal-level, BFSI-threaded, Apic-calibrated.

What this file is. A structured drill scaffold for the Apic Applied AI Architect prep course.

Purpose

  • Pick one design decision from a BFSI architecture and defend it under skeptical questioning.
  • Explain the rejected alternative fairly before stating why it loses.
  • Close with the eval, rollout, or governance condition that would change your mind.

Fill-in structure

  • Context: customer, stakeholder, risk, and business goal.
  • Architecture/eval decision: the concrete design, rubric, or conversation pattern this file teaches.
  • Trade-offs: the rejected alternatives and the condition under which they become reasonable.
  • BFSI constraints: data residency, RBAC, PII handling, auditability, latency, cost, and human approval where relevant.
  • Strong-Hire answer: the crisp version you can say in an interview without reading notes.

Strong-Hire bar

  • Explains the decision in customer language before implementation language.
  • Names measurable success criteria and failure modes.
  • Shows safety, governance, and eval thinking as part of the architecture, not as afterthoughts.
  • Can be defended to an engineering lead, CISO, and executive sponsor.