As you know, our experimentation framework is designed to be dynamic — assigning users to test groups on a per-session basis to maximize randomness and explore more behavior patterns.

However, for specific use cases — especially those focused on longer-term behavioral change or ROI measurement — some clients have requested that we support user-based test group stickiness.

We’re happy to announce that this is now available.

In the interaction settings, clients can now choose whether test group assignment should refresh each session (default), or persist at the user level. This helps ensure that users consistently experience the same variant across multiple sessions — leading to more coherent journeys and better data for long-term impact analysis.

This feature adds a new layer of control to testing strategies, giving product and marketing teams the precision they need when experiment continuity matters.

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