A trustworthy experiment platform is far more than a 50/50 split. The signal is consistent assignment, exposure logging, statistical rigor, and guardrails that survive peeking and sample-ratio mismatch. Here is the design.
Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.
A trustworthy experiment platform is far more than a 50/50 split. The signal is consistent assignment, exposure logging, statistical rigor, and guardrails that survive peeking and sample-ratio mismatch. Here is the design.
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