> ## Documentation Index
> Fetch the complete documentation index at: https://docs.permutive.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Second-Party Data with Permutive

> Understand how to use second-party data in Permutive for audience enrichment and targeting

## Overview

Second-party data is fundamentally someone else's first-party data. The client collects data straight from their audience, which comes from one source. This is typically user cohort membership data that comes from an advertising partner or an advertising partner's DMP. It could also be the publisher's first-party data on their subscribers or other identifiable users.

## Using Second-Party Data in Permutive

With Permutive you can receive second-party data in two ways:

* **LiveRamp**: Receive audience data through LiveRamp's data distribution network. See [Ingesting Second-party Data via LiveRamp](/guides/connectivity/imports/ingesting-data-via-liveramp) for setup instructions.
* **Custom Setup (GCS Upload)**: Upload user ID and segment files directly to a Permutive-managed GCS bucket. See the [Imports product documentation](/products/connectivity/imports) for data file format and upload details.

Once received, you can build Permutive cohorts using this data and target users. Before uploading data, you'll need to configure a [Taxonomy](/guides/connectivity/imports/configuring-taxonomy) to define your segment codes.

## Creating Cohorts with Second-Party Data

Once your second-party data has been ingested and confirmed as available:

<Steps>
  <Step title="Navigate to Custom Cohorts">
    Go to **Audience > Custom Cohorts** in the Permutive Dashboard.
  </Step>

  <Step title="Create a New Cohort">
    Select **+ Add Cohort**.
  </Step>

  <Step title="Add First-Party Rules (Optional)">
    Set up any first-party rules you want to combine with your second-party data.
  </Step>

  <Step title="Add Audience Imports Condition">
    Choose **+OR** or **+AND**, then select **Audience Imports**.
  </Step>

  <Step title="Select the Second-Party Segment">
    Search for and select the relevant second-party segment from your imported data.
  </Step>

  <Step title="Save the Cohort">
    Save the cohort to begin targeting users who match both your first-party and second-party criteria.
  </Step>
</Steps>

<Note>
  After saving, the **Predicted Audience Size** shown in the Cohort Builder is a historical estimate. The **Live Audience Size** will start at zero and grow over time as imported users are evaluated. This is expected — see [Understanding Audience Size for Import Cohorts](/guides/signals/cohorts/custom/using-audience-imports#understanding-audience-size-for-import-cohorts) for details.
</Note>

## Next Steps

<CardGroup cols={2}>
  <Card title="Configure Taxonomy" icon="list-tree" href="/guides/connectivity/imports/configuring-taxonomy">
    Define segment codes and names for your imported data
  </Card>

  <Card title="LiveRamp Import" icon="arrow-right-to-bracket" href="/guides/connectivity/imports/ingesting-data-via-liveramp">
    Set up second-party data ingestion via LiveRamp
  </Card>
</CardGroup>