Information specific to the control or treatment campaign of a Performance Max experiment.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/resources/experiment_arm.proto)

| Fields ||
|---|---|
| ## `experimental_performance_max_campaign_settings` | `https://developers.google.com/google-ads/api/reference/rpc/v25/ExperimentArm.ExperimentalPerformanceMaxCampaignSettings` Immutable. Performance Max campaign settings to be applied on the Google-created experimental campaign in a Performance Max experiment. The experimental campaign is automatically created by Google upon experiment creation. |