# Progressive rollouts

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A progressive rollout is a `Test` [experiment](https://docs.hypertune.com/concepts/experiments) with a single dimension and one arm with traffic allocation.

To create a progressive rollout, insert an `Experiment` expression in your flag logic. Navigate to the experiment page from the dropdown and set the Control arm percentage to 0%. Navigate back to your logic and ensure the flag is enabled for the Test arm but disabled for the Control and Default arms.