# Customer.io Audience


RudderStack's **Customer.io Audience** integration leverages the [Customer.io Segments](https://docs.customer.io/journeys/segments/#what-are-segments) feature which lets you group users sharing similar characteristics as segments and use them as recipient lists, filters, campaign triggers, conversions, and more.

## Links

This documentation consists of the following sections:

- [Set up Customer.io Audience destination in RudderStack]({{< ref "destinations/reverse-etl-destinations/customerio-audience/setup-guide.md" >}})
- [Connect Reverse ETL source to Customer.io Audience]({{< ref "destinations/reverse-etl-destinations/customerio-audience/connect-retl-source.md" >}})

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