Creating an A/B Test Task

You can compare the performance of multiple creatives. When creating a test task, you can optimize the task, which enables analytics to use a multi-armed bandit approach to finding the best-performing variant. As a result, an optimized test task delivers the best-performing variants to more of the target audience. Test tasks can also discover previously undefined segments of people that prefer a different creative than the creative that most of the target audience prefers. You can learn about a discovered segment by reviewing its profile.

Note: A task automatically locks while you are working on it so that another person cannot edit the task that you have open. Locked tasks contain a warning message that is visible when you open the task. Changes made to a task while it is locked by another user cannot be saved. For more information, see Working with Locked Items.
Last updated: August 18, 2026