Choose One Metric That Best Shows Google Docs Is Succeeding, and Defend It
Company: Google
Role: Product Manager
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Other
If Google Docs could track only one metric to judge whether it is succeeding, which would you choose? Walk through how you arrive at the choice, define the metric precisely and explain why it beats the alternatives.
```hint Test candidates against the job
State what people come to Docs to accomplish, then check each candidate metric by asking whether it could rise while that job is being done badly.
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### Clarifying Questions
- Should the metric cover Docs for everyone, or a specific audience such as consumers, schools or Workspace business customers?
- Is the metric meant to steer the product team's roadmap or to report health to leadership?
- Is there a current company priority, such as growth, engagement or revenue, that the metric should serve?
### What a Strong Answer Covers
- The product's purpose and main users, stated before any metric is named
- Several candidate metrics across the user lifecycle, each with what it captures and how it can mislead
- One chosen metric with a precise definition (what counts as activity, over what window) and a justification tied to the product's purpose
- Supporting and guardrail metrics that cover the chosen metric's blind spots
- How the metric would be used in practice: targets, segment breakdowns and what a drop would trigger
### Follow-up Questions
- Your metric rose last quarter, but paid Workspace seats did not. What could explain the gap?
- How could a team game your metric, and what would you pair with it to stop that?
- Would your choice change if the priority became winning people away from Microsoft Word?
Overview: A product metrics interview question that asks which single metric best shows whether Google Docs is succeeding. It tests understanding of the product's purpose and users, comparison of candidate metrics and their blind spots, a precise metric definition, and the supporting and guardrail metrics around it.