---
title: "Third-Party Audience Targeting"
slug: "third-party-targeting"
tags: ["3p", "Third Party", "Customer Audiences", "3p Segments"]
status: "update"
updated: 2025-06-11T14:47:42Z
published: 2025-06-11T14:47:42Z
canonical: "help.quantcast.com/third-party-targeting"
---

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

# Third-Party Audience Targeting

Quantcast has partnered with LiveRamp’s Data Marketplace to ingest and source third-party audiences.

> [!NOTE]
> Third-party segments are best used as a complement to Quantcast audiences, and should be viewed as a backup option when Quantcast audience targeting options do not fully align with your campaign needs.

### Overview

Quantcast offers two options for activating third-party audiences:

1. [**Off-the-Shelf Third-Party Audiences:**](/v1/docs/using-third-party-audiences) Access a wide range of pre-built audience segments available through Quantcast’s library, powered by LiveRamp’s Data Marketplace.
2. [**Custom Third-Party Audiences:**](/v1/docs/ingesting-custom-third-party-audiences) Distribute a custom segment built by a data provider via LiveRamp’s Data Marketplace to meet specific targeting needs.

### Third-Party Audience Targeting Capabilities

Quantcast enables users to activate and target third-party audiences using a range of strategic approaches:

**Lookalike:** Quantcast builds a lookalike model based on the third-party audience to identify new users who share similar behaviors and attributes.

**Retargeting:** Quantcast exclusively retargets users within the specified third-party audience for precise and efficient re-engagement.

**Exclusion:** Users in the third-party audience are excluded from targeting to improve audience quality and prevent oversaturation.