tezvyn:

Implement a welcome-message A/B test

Source: interviewintermediate

WHAT IT TESTS: end-to-end client experiment basics. OUTLINE: deterministic hash of a stable ID for sticky assignment, conditional rendering of the personalized variant, and exposure plus click tracking keyed to the same ID.

WHAT IT TESTS: whether you can implement a basic experiment correctly with sticky assignment and attributable conversion. ANSWER OUTLINE: assign by hashing a stable user or device ID with the experiment key so the same user always lands in the same bucket, render generic or name-personalized copy by variant, fire an exposure event on display, and tag the Get Started click with the experiment id and variant so conversion is attributable.

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Implement a welcome-message A/B test · Tezvyn