# Progressive rollouts {% embed url="" %} A progressive rollout is a `Test` [experiment](/concepts/experiments.md) 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hypertune.com/concepts/progressive-rollouts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.