Metrics question
You just launched Instagram Video. How would you know if it is successful?
- Meta
- Metrics
- Medium
Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.
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What this question tests
Tests defining success metrics for a new video product launch inside an existing photo-first platform.
How to approach it
- Distinguish this from Stories and Reels, treating it as a longer-form video feature launch, similar to IGTV.
- Set the north star as time spent watching this video format per active viewer, or completion rate.
- Add supporting metrics: creator adoption, viewers reached per video, and cross-post rate from Feed to this format.
- Check for cannibalization of existing Feed and Stories engagement, not just whether this format adds time.
- Segment by creator type, established versus new, since adoption drivers differ.
What a strong answer includes
- Picks completion rate and watch time as the core metric, the right choice for video over a raw view count.
- Explicitly checks for cannibalization of existing formats, a real risk IGTV actually faced.
- Separates creator-side and viewer-side metrics instead of collapsing them into one number.
Common mistakes
- Counting only total views without completion rate or session-level watch time.
- Ignoring cannibalization of existing Stories or Feed engagement.
Likely follow-up questions
- How would you tell if this is cannibalizing Stories engagement?
- What would make you kill this feature, as Instagram did with IGTV?
More metrics questions
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- You launched a new signup flow to encourage new users to add more profile information. A/B test results indicate that the % of people that added more information increased by 8%. However, 7 day retention decreased by 2%. What do you do?Google · Metrics · Hard
- Define the metrics for YouTube search.Google · Metrics · Medium
- You are the PM of Instagram app. The MAU has been constant but DAU has declined. What will you do?Meta · Metrics · Medium
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