Strategy question
How will you support advertising in a cookieless world?
- Rakuten
- Strategy
- Hard
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What this question tests
Strategic thinking on ad tech under privacy constraints, a live problem for any ad-supported business like Rakuten.
How to approach it
- Clarify scope, whether the focus is Rakuten's own ad network, its retail media business, or a general strategy discussion.
- Frame the core problem: third-party cookies are going away, so identity and measurement need new foundations.
- Lay out the main alternatives: first-party data and login-based identity, contextual targeting, and cohort or clean-room based approaches.
- Recommend leaning into first-party data given Rakuten's logged-in shopping and loyalty ecosystem, since that is a durable advantage competitors without a login base lack.
- Address measurement separately from targeting, proposing aggregated conversion reporting or clean rooms for advertiser trust.
- Confirm with the interviewer whether they want a targeting-only answer or a full advertiser value proposition.
What a strong answer includes
- Names Rakuten's specific advantage, its logged-in ecommerce and loyalty program, as a first-party data moat competitors lack.
- Distinguishes retail media, where purchase intent data is strong, from open-web display, which is hit hardest by cookie loss.
- Proposes a concrete first step, building a clean room for advertiser measurement without exposing raw user data.
- Flags the tradeoff, first-party strategies favor large logged-in platforms and can worsen competition against smaller publishers.
Common mistakes
- Proposing device fingerprinting or other workarounds that ignore the privacy intent behind cookie deprecation.
- Treating this as a purely technical problem without addressing advertiser trust and measurement.
- Not distinguishing retail media from open-web advertising, which face very different exposure.
Likely follow-up questions
- How would you convince advertisers to trust a clean room measurement approach?
- What would you do differently for a publisher without a logged-in user base?
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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 9: Prove it paid off: outcomes, economics, and pricing
- Chapter 14: Get the job: the AI PM interview loop