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Should We Build This? (Go / No-Go)

Tests structured decision-making under uncertainty: opportunity sizing, fit, and risk - landing on a clear recommendation.

Interview prompt

A stakeholder proposes building [a new product/feature, e.g. a payments feature]. Should we build it?

What interviewers evaluate

  • Do you assess the opportunity (market size, user need) before deciding?
  • Do you evaluate strategic fit (does it advance the mission and leverage our strengths)?
  • Do you weigh build vs buy vs partner, and the cost/risk?
  • Do you reason about risks (regulatory, competitive, execution)?
  • Do you land on a clear, defensible recommendation with conditions?

A framework to structure your answer

  1. Clarify the proposal & the why - what problem, for whom, and what outcome is hoped for.
  2. Opportunity - size the user need and market; is it big enough to matter?
  3. Strategic fit - does it advance the mission and leverage existing strengths/assets/distribution?
  4. Feasibility & alternatives - build vs buy vs partner; cost, time, and required capabilities.
  5. Risks - regulatory/compliance, competitive response, execution and opportunity cost.
  6. Recommend - a clear go / no-go / 'go if X,' with the key assumption to validate first.

Strong sample answer

Try structuring your own answer first, then reveal a strong worked example.

Common variants

  • Should [company] enter [new market]?
  • Should we build this in-house or buy/partner?
  • A competitor launched X. Should we copy it?

Pitfalls to avoid

  • Saying yes/no immediately without sizing the opportunity or fit.
  • Ignoring build-vs-buy-vs-partner.
  • Skipping regulatory/competitive/execution risk.
  • No clear recommendation - just listing considerations.
  • Recommending a giant build when an MVP/pilot would de-risk it cheaply.

Likely follow-ups

  • What single assumption, if false, kills this?
  • How would you structure a pilot to decide in 4-6 weeks?
  • Leadership wants it built fully now. How do you push back?