Product design question
Design a grocery app for Facebook.
- Meta
- Product design
- Hard
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What this question tests
Product design for a logistically complex category (grocery) inside a social platform: can you assess whether Facebook's assets actually support this or if it's a poor fit.
How to approach it
- Question the premise: grocery requires fulfillment/logistics expertise Facebook doesn't have, so consider whether this should be a marketplace/discovery layer partnered with existing grocery delivery providers rather than a built-from-scratch grocery app.
- Define the user: someone wanting a simple way to order groceries from local stores without leaving the app they already use socially.
- Propose the design: integrate existing local grocery/store inventories (via partnerships) into Marketplace, with social features like shared shopping lists for households.
- Add a social layer that's actually differentiated: recommendations from friends' reviews of local grocers, or group ordering for shared households.
- Address fulfillment: partner with existing delivery networks (e.g. Instacart-style logistics) rather than building delivery infrastructure from scratch.
- Define success: order completion rate and repeat usage, tracked against the cost/complexity of the partnership model.
What a strong answer includes
- Explicitly questions whether Facebook should build full grocery infrastructure versus partnering, showing strategic judgment over blind execution.
- Proposes a genuinely differentiated social angle (shared household lists, friend recommendations) instead of cloning Instacart inside Facebook.
- Recommends partnering for fulfillment, correctly identifying logistics as outside Facebook's core competency.
- Ties success to order completion and repeat usage, business outcomes, not just feature launch.
Common mistakes
- Designing a full grocery logistics stack as if Facebook should build delivery infrastructure from scratch.
- Proposing a grocery app with no genuinely social differentiation, making it a weaker clone of existing grocery apps.
Likely follow-up questions
- Would you build, partner, or acquire for fulfillment, and why?
- What's the real reason someone would use this instead of Instacart directly?
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Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop