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Favorite Products & Improvement Metrics

Last updated: Mar 29, 2026

Quick Overview

Practice a PM onsite prompt about products you worked on, admired products, and improvement metrics. The guide covers product storytelling, North Star and input metrics, product taste, a non-tech improvement example, primary and guardrail metrics, and practical experiment design.

  • medium
  • Google
  • Product / Decision Making
  • Product Manager

Favorite Products & Improvement Metrics

Company: Google

Role: Product Manager

Category: Product / Decision Making

Difficulty: medium

Interview Round: Onsite

##### Question Briefly describe one product you have worked on and the key metrics you tracked. Name two tech products and two non-tech products you admire. Pick one non-tech product and explain how you would improve it. Define the success metrics you would use to judge your proposed improvement.

Quick Answer: Practice a PM onsite prompt about products you worked on, admired products, and improvement metrics. The guide covers product storytelling, North Star and input metrics, product taste, a non-tech improvement example, primary and guardrail metrics, and practical experiment design.

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|Home/Product / Decision Making/Google

Favorite Products & Improvement Metrics

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Google
Jul 4, 2025, 8:28 PM
mediumProduct ManagerOnsiteProduct / Decision Making
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0

Onsite PM Prompt: Product Thinking and Improvement Metrics

You are a Product Manager candidate. Use concise, structured answers and define metrics clearly. If you cannot share real numbers, provide reasonable baselines and targets.

Answer:

  1. Describe one product you have worked on.
    • What problem did it solve, for whom, and at what lifecycle stage?
    • What was your role and scope?
    • What key metrics did you track, including North Star and input metrics?
  2. Name two tech products and two non-tech products you admire.
    • Pick one non-tech product and explain one improvement you would make.
    • State the user problem, constraints, and hypothesis.
  3. Define success metrics for your proposed improvement.
    • Identify primary, secondary, and guardrail metrics.
    • Briefly outline how you would measure them.

Constraints & Assumptions

  • Use one concrete product example rather than speaking abstractly.
  • Explain your role and impact clearly.
  • For admired products, show product taste, not just preference.
  • For the non-tech improvement, define a testable hypothesis and measurement plan.

Clarifying Questions to Ask

  • Should I focus on a product I shipped, a product I managed, or a product I admire?
  • Do you prefer a consumer, enterprise, marketplace, or platform example?
  • Should the non-tech improvement be physical product, service, retail, travel, or another category?
  • Are hypothetical metrics acceptable if real numbers are confidential?

Part 1 - Product You Worked On

Describe the product, problem, users, lifecycle stage, role, scope, metrics, result, and lesson.

What This Part Should Cover

  • One-line product summary.
  • User problem and evidence.
  • Lifecycle stage and constraints.
  • Your ownership and cross-functional partners.
  • North Star, input metrics, guardrails, and outcome.

Part 2 - Products You Admire and Improvement

Name two tech products and two non-tech products you admire. Pick one non-tech product and propose an improvement.

What This Part Should Cover

  • Product taste: why the products work for users.
  • Clear non-tech user problem.
  • Constraints such as cost, operations, supply chain, behavior, or safety.
  • Hypothesis and improvement concept.

Part 3 - Success Metrics and Measurement

Define metrics and measurement plan for the improvement.

What This Part Should Cover

  • Primary metric tied to the user problem.
  • Secondary and guardrail metrics.
  • Experiment, pilot, before/after, or quasi-experiment design.
  • Time frame and success criteria.

What a Strong Answer Covers

A strong answer demonstrates product judgment through concrete examples, clear metrics, user empathy, and a practical measurement plan that balances primary outcomes with guardrails.

Follow-up Questions

  • Why was that the right North Star metric?
  • What input metric was most actionable?
  • What trade-off did you make?
  • Why do you admire each product?
  • What would make you reject your proposed improvement?
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