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

# Campaigns

<Info>
  **New Campaign Taxonomy**

  Criteo campaigns follow a three-tier structure:\
  **Campaigns**, **Ad Sets**, and **Ads**.

  Your marketing objective and Campaign spend limit are specified at the **Campaign** level.

  Targeting controls and bid targets are set at the **Ad Set** level.  Several Ad Sets can be linked to the same Campaign.

  **Ads** are the actual media that is used to address the audience of a given Ad Set. There can be many Ads associated with a given Ad Set.
</Info>

 

## **Introduction**

Criteo's **Campaign API** allows you to retrieve information about the current configuration of your advertising Campaigns and Ad Sets.

This API allows you to **search** for Campaigns based on filters and **update** your Campaigns' objectives and spend limits.

It also allows you to **search** for Ad Sets based on filters, **start and stop** Ad Sets, and **update** your Ad Sets' names, start and end dates, bid amounts, frequency capping, and other targeting controls.