tezvyn:

Design a centralized experimentation service

Source: interviewintermediate

WHAT IT TESTS: platform thinking for shared experimentation. OUTLINE: a config/assignment API, deterministic SDK-side bucketing, and a separate exposure-logging pipeline.

WHAT IT TESTS: whether you can design experimentation as a platform serving many teams and clients consistently. ANSWER OUTLINE: a control plane stores experiment definitions, allocations, and targeting; clients pull config and run identical deterministic bucketing locally via shared SDKs so web, iOS, and Android agree on the same hash; a decoupled exposure-logging stream records who saw what for analysis.

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Design a centralized experimentation service · Tezvyn