> ## 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.

# Marketplace Performance Outcomes

## What MPO is

**Marketplace Performance Outcomes (MPO)** is designed for marketplaces that want to activate and scale **offsite advertising for sellers** through a structured, API-driven workflow.

At a high level, MPO gives marketplaces a way to:

* Onboard sellers.
* Control campaign delivery.
* Allocate and manage budgets.
* Monitor performance across sellers and campaigns.

MPO supports two main activation models:

* **Multi-seller** – multiple sellers share the same campaign.
* **Single-seller** – each seller gets a **dedicated ad set/campaign** based on a marketplace-defined template.

These two models are **complementary**, not mutually exclusive:

* **Multi-seller**: pooled activation at scale, especially for long-tail or smaller-budget sellers.
* **Single-seller**: dedicated setup for sellers that need **greater transparency or control**.

***

## What makes MPO different

MPO is designed to optimize advertising performance at the **seller level**.

Unlike traditional DSP setups, where optimization is typically applied **at campaign level across multiple advertisers**, MPO uses the **seller** as the primary unit of configuration and optimization.

In practice:

* Each **seller’s budget** is managed **independently**.
* Budget is spent toward **that seller’s configured objective**.
* Performance is tracked at **seller** and **seller-campaign** level.

This model allows marketplaces to manage many sellers within a shared framework while maintaining **per-seller control and visibility**.

## Why MPO

MPO can be used to:

* Integrate **seller advertising into marketplace workflows**.
* Manage **campaigns, budgets, and sellers programmatically**.
* Access **performance data** across sellers and campaigns.

In short, MPO is designed to support **scalable, API-driven seller advertising** within marketplace environments.

## How MPO works

A typical MPO integration follows this flow:

1. **Identify the advertiser** (your marketplace context).
2. **Create and manage sellers** (via catalog + MPO Sellers endpoints).
3. **Configure seller campaign delivery** (ad sets and templates).
4. **Set and manage budgets** per seller.
5. **Retrieve performance statistics** to optimize and monitor.

Targeting and delivery controls are defined at the **ad set / campaign level**, which determines how campaigns are executed.

This structure allows marketplaces to integrate MPO into existing systems while keeping **seller activation and campaign management fully programmatic**.

## Singleseller and multiseller in MPO

MPO supports two complementary activation models:

### Multiseller

* Multiple sellers share one campaign or ad set.
* Simplified structure for **onboarding many sellers quickly**.
* Commonly used for **smaller seller budgets**.

### Singleseller

* **One seller per ad set/campaign**, based on a **shared template**.
* **Dedicated budget per seller**.
* More **granular configuration and reporting**.

### SingleSeller vs MultiSeller MPO campaigns

“Single-Seller” campaigns build on top of the **multi-seller** model where multiple sellers share a single campaign.

**When to use each**

Use **Single-Seller** when:

* Per-seller budget control is required.
* Granular per-seller performance tracking and troubleshooting are needed.
* Specific sellers need dedicated configuration or reporting.

Use **Multi-seller** when:

* Onboarding many sellers quickly is a priority.
* Seller budgets are small or highly variable.
* A pooled setup is sufficient for business goals.

*For more detail, see the public guide:*\
*[MPO Single Seller Campaigns](/marketing-solutions/docs/single-seller-campaigns).*

***

## What You Can Do With the MPO API

The MPO API includes endpoints for:

* **Advertisers**
* **Sellers**
* **Seller campaigns**
* **Budgets**
* **Statistics**

These APIs allow marketplaces to:

* Automate **seller advertising workflows**.
* Integrate MPO deeply into **internal systems** (e.g., marketplace UI, data warehouse, reporting).
* Build custom orchestration, monitoring, and optimization logic on top of Criteo delivery.

***

## Optimization Strategies

MPO supports multiple optimization strategies, allowing marketplaces to align campaign delivery with different seller goals.

Campaigns can be configured to optimize for:

* **Sales / revenue**
* **Conversions**
* **Leads**
* **Traffic / landing visits**
* **Click volume**

These strategies can be selected depending on:

* The seller’s **objective** (performance vs scale).
* The seller’s **stage in the funnel** (prospecting vs retargeting vs always-on).

***

## How to Use this Documentation

Use this page as the **entry point** to MPO. Then continue with the documentation that matches your integration and use case:

* **Single-seller documentation**:
  * Concepts and entities for Single-Seller.
  * Single-Seller Quick Start (create first budget and campaign).
  * Managing Single-Seller budgets and `productSet`s.
  * Single-Seller troubleshooting and FAQs.
* **Multi-seller documentation**:
  * Concepts and entities for multi-seller setups.
  * Multi-seller onboarding and campaign management flows.
  * Budgeting and optimization best practices.
* **Statistics**:
  * Available stats endpoints (`/stats/campaigns`, `/stats/sellers`, `/stats/seller-campaigns`).
  * How to choose identifiers (`campaignId`, `sellerId`, `sellerCampaignId`) for different reporting needs.
  * Patterns for monitoring performance and building dashboards.

### Multiseller Guides

<Columns cols={3}>
  <Card title="Managing Sellers" href="/marketing-solutions/docs/multiseller-managing-sellers">
    Explore the endpoints for seller management via API.
  </Card>

  <Card title="Managing Campaigns" href="/marketing-solutions/docs/multiseller-managing-campaigns">
    Explore the endpoints allowing to manage campaigns.
  </Card>

  <Card title="Managing Budgets" href="/marketing-solutions/docs/multiseller-managing-budgets">
    Explore the programmatic ways to manage budgets.
  </Card>

  <Card title="Getting Statistics" href="/marketing-solutions/docs/multiseller-getting-statistics">
    Learn more about MPO Multiseller statistics.
  </Card>
</Columns>

### Singleseller Guides

<Columns cols={3}>
  <Card title="Campaigns - Concept Guide" href="/marketing-solutions/docs/campaigns-concept-guide">
    Start by exploring the campaign-related concepts.
  </Card>

  <Card title="Quick Start" href="/marketing-solutions/docs/quick-start-launch-a-single-seller-campaign-via-mpo">
    Learn how to quick start by launching a Single-Seller Campaign via MPO.
  </Card>

  <Card title="Managing Sellers" href="/marketing-solutions/docs/managing-sellers">
    Explore the endpoints for seller management via API.
  </Card>

  <Card title="Managing Campaigns" href="/marketing-solutions/docs/managing-campaigns">
    Explore the endpoints allowing to manage campaigns.
  </Card>

  <Card title="Managing Budgets" href="/marketing-solutions/docs/managing-budgets">
    Explore the programmatic ways to manage budgets.
  </Card>

  <Card title="Getting Statistics" href="/marketing-solutions/docs/getting-statistics">
    Learn more about MPO Singleseller statistics.
  </Card>
</Columns>