Data Analyst · Senior · System design

Design an internal A/B testing platform for a product with ten million users and a hundred concurrent experiments. What components would it consist of?

~10 min by voice

How to approach it

The interviewer checks whether the candidate understands an A/B platform as a system you can trust: deterministic assignment, isolation of a hundred concurrent experiments, correct statistics, and automatic protection against broken data (SRM, A/A) and against harm to the product (guardrails).

Have you seen this question in a real interview?

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Topics

ab testing experimentation platform

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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

Best with headphones · ~10 min