Bucketing decides which variant each visitor sees. Opti-Behavior keeps it consistent so a visitor sees the same variant on every visit. This article explains it.
How assignment works #
- When a visitor enters a test, they are assigned to a variant based on your traffic split.
- The assignment is stable, so the same visitor keeps the same variant across pageviews and return visits.
- This prevents a visitor from seeing conflicting versions, which would spoil results.

Expected result #
Each visitor experiences one consistent variant, and totals match your configured split over time.
FAQ #
Does bucketing need cookies? #
Assignment uses privacy-safe identification consistent with Opti-Behavior’s cookieless approach.