Product design question
How would you design a Google Ads product tailored for digital billboards?
- Flipkart
- Product design
- 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
Product design extending an existing ads platform into a new inventory type with real world physical constraints.
How to approach it
- Clarify the buyer: local businesses versus large brand advertisers, since their billboard buying needs differ.
- Identify constraints unique to billboards: no click through, a few seconds of dwell time, and pricing based on impressions and location, not clicks.
- Segment need: self serve small business buying, like a local restaurant, versus programmatic large scale brand campaigns.
- Prioritize self serve simplicity for small advertisers, since billboard buying today is opaque and requires broker relationships.
- Propose picking a location on a map, seeing estimated daily impressions and price, uploading a simple static creative, and booking instantly.
- Define success as number of small businesses self serve booking and average time to book a campaign.
What a strong answer includes
- Identifies the core constraint correctly, no clicks, so success must be measured by impressions and local footfall lift, not CTR.
- Separates small business self serve from large brand programmatic as two distinct products.
- Gives an illustrative number, for example assuming average time to book drops from days with a broker to under 10 minutes self serve.
- Addresses measurement, like using anonymized mobile location data to estimate impression counts.
Common mistakes
- Applying standard search or display ad metrics like click through rate to a format that has none.
- Ignoring the existing out of home ad buying ecosystem and brokers this would disrupt.
Likely follow-up questions
- How would you measure ad effectiveness without clicks?
- How would you price impressions fairly across different billboard locations?
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More questions from Flipkart
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop