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

# Customer Data Platforms (CDP)

> Integrate Customer Data Platforms with Courier to sync user data and trigger notifications from CDP events.

Customer Data Platforms (CDPs) collect, unify, and activate customer data across your tech stack. Courier integrates with popular CDPs to automatically sync user profiles and trigger notifications based on customer behavior and events.

When you integrate a CDP with Courier, you can:

* **Sync profiles automatically** - User profiles are created and updated in Courier in real-time from your CDP data
* **Trigger notifications from events** - Customer events like purchases, sign-ups, or usage milestones automatically trigger Courier workflows
* **Personalize across channels** - Use CDP data to determine the best channel and personalize content for each user

## Available Integrations

<CardGroup cols={2}>
  <Card title="Segment" href="/external-integrations/cdp/segment" icon="database">
    Send events to Courier and track notification events in Segment
  </Card>

  <Card title="RudderStack" href="/external-integrations/cdp/rudderstack" icon="database">
    Sync events with Courier and send notification data to RudderStack
  </Card>
</CardGroup>