Metrics question
What would you do if, all of a sudden, our web traffic dropped by 100%?
Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.
Start a mock interview on this question · Mock interview from a job description
What this question tests
Incident-response diagnosis, distinguishing a real product problem from a technical outage.
How to approach it
- Recognize a 100% drop almost certainly signals a technical outage or tracking failure, not a gradual behavior shift.
- First check whether the site or service is actually down, versus just the analytics pipeline being broken.
- If it's a real outage, escalate immediately to engineering and on-call rather than doing a product investigation.
- If it's a tracking issue, verify with an alternate data source, e.g. server logs versus the analytics tool.
- Once resolved, run a postmortem: root cause, time to detection, time to resolution, prevention steps.
- Note who needs to be notified and how fast.
What a strong answer includes
- Immediately recognizes a 100% drop signals an outage or broken tracking, not a normal metric investigation.
- Prioritizes checking site or service availability directly before doing any deeper analysis.
- Cross-verifies with an independent data source to rule out an analytics pipeline failure specifically.
- Proposes a postmortem afterward to prevent recurrence, showing process maturity beyond just fixing the issue.
Common mistakes
- Treating a 100% drop like a normal metric-decline investigation instead of recognizing it as an incident.
- Not distinguishing between the service being down and the tracking being broken.
Likely follow-up questions
- Who would you notify first, and how quickly?
- What would you put in place to detect this kind of drop faster next time?
More metrics questions
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- Set goals for Facebook notifications.Spotify · Metrics · Medium
- How would you measure the success of YouTube?Spotify · Metrics · Medium
- There are about 1 million inactive Netflix users. What would you do about them?Spotify · Metrics · Hard
- What are 10 important metrics for Spotify under engagement category? Which one would you improve? Why?Spotify · Metrics · Medium
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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