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    What is the difference between A/B testing and personalization?

    From the Tailor AI team Β· Reviewed

    Answer

    A/B testing measures which experience performs better. Personalization changes the experience for a specific visitor segment. The strongest workflows often combine both.

    A/B testing asks: "Does variant B beat control?"

    Personalization asks: "Should this audience see a different experience?"

    You can personalize without testing, but then you are relying on judgment. You can test without personalization, but then every visitor gets the same experiment. Combining them lets you tailor the page for a specific segment and measure whether that tailored experience improves outcomes.

    What I'd do next

    1. Use a broad A/B test when one change should help everyone. Use personalization when different audiences need different messages, proof, CTAs, or offers.

    Caveats

    If you personalize too narrowly, you may not have enough traffic or conversions to measure impact.

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