Product design question
What are the key features of a video streaming app?
- Rakuten
- Product design
- Easy
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What this question tests
Baseline product knowledge and prioritization for a well-understood product category.
How to approach it
- Clarify target audience and content type, e.g. general entertainment versus niche or regional content.
- List core features grouped by need: discovery, playback, and account management.
- Prioritize personalized recommendations and reliable playback as most critical to retention.
- Note technical requirements: adaptive bitrate streaming for varying bandwidth, and CDN use for low latency.
- Define success as watch-time per user or completion rate per title.
- State how you'd trade off scope for a first release.
What a strong answer includes
- Groups features by user need, discovery, playback, account, rather than a random feature list.
- Names personalized recommendations as critical since content overload is the core streaming UX problem.
- Mentions adaptive bitrate streaming and CDN delivery, showing technical grounding appropriate for a PM.
- Picks watch-time and completion rate as success metrics, standard for streaming retention.
Common mistakes
- Listing only surface features without prioritizing which matter most.
- Ignoring technical and infrastructure needs like adaptive streaming that directly affect user experience.
Likely follow-up questions
- How would you prioritize these features for an MVP launch?
- How would recommendations differ for a new user with no watch history?
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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 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop