Metrics question
What's your favorite video-calling product? How would you define success metrics and goals for it?
- Meta
- Metrics
- Medium
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What this question tests
Metrics thinking: building a goal-driven metric tree for a real product, distinguishing north star from guardrails.
How to approach it
- Pick a specific video-calling product (e.g. Zoom) and state why you chose it, to keep the answer concrete.
- State the product's core goal, such as enabling reliable, high-quality remote conversations.
- Define the north star metric, like weekly minutes of successful calls per active user.
- Break it into a metric tree: call initiation rate, call completion rate without drops, and post-call satisfaction.
- Add guardrail metrics, such as audio/video quality complaints or churn among paid accounts.
What a strong answer includes
- Chooses a north star tied to real usage value (successful call minutes) not vanity metrics like downloads.
- Breaks the funnel into concrete stages: scheduled, joined, completed without drop, rated positively.
- Adds a guardrail metric like dropped-call rate, showing awareness that growth shouldn't hurt reliability.
- Uses an assumed number, e.g. targeting under 2 percent dropped-call rate, to anchor the discussion.
Common mistakes
- Picking a vanity metric like total downloads instead of a value-based north star.
- No guardrail metrics, ignoring quality or reliability trade-offs.
- Being too vague about which product is being discussed.
Likely follow-up questions
- How would you detect if call quality is silently degrading?
- What would you do if completion rate is high but satisfaction is low?
- How do you weigh growth metrics against reliability metrics?
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More questions from Meta
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 9: Prove it paid off: outcomes, economics, and pricing
- Chapter 2: Data fluency: SQL, logs, and reading the truth yourself
- Chapter 14: Get the job: the AI PM interview loop