> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v23** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/InsightsAudienceDefinition).

A structured definition of the audience of interest for which insights are being requested in AudienceInsightsService.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/services/audience_insights_service.proto)

| Fields ||
|---|---|
| ## `audience` | `InsightsAudience` Required. The audience of interest for which insights are being requested. |
| ## `baseline_audience` | `InsightsAudience` Optional. The baseline audience. The default, if unspecified, is all people in the same country as the audience of interest. |
| ## `data_month` | `string` Optional. The one-month range of historical data to use for insights, in the format "yyyy-mm". If unset, insights will be returned for the last thirty days of data. |