Case study

From hours to minutes: Stagwell transforms campaign audits with MCP-enabled Copilot agents

June 22, 2026
Group of coworkers sitting around a table, collaborating over a laptop and printed materials in a modern office setting.

Audit time: hours to minutes

More audits across markets

More time for strategic work

Assembly, Stagwell's global omnichannel media agency, needed to scale search expertise across a complex global paid search program without slowing teams down. Manual audits were time-consuming and hard to scale. Working with Microsoft, they rebuilt the process using a Microsoft 365 Copilot agent connected through Microsoft Advertising MCP server and Azure AI Foundry, a world first. What once took hours now takes minutes, enabling a shift from periodic audits to continuous optimization for their clients.

Stagwell Media Platform operates across a complex paid search ecosystem spanning multiple markets, product lines, and account structures. But despite the scale, optimizing performance consistently was a challenge. Audits can be slow and labor-intensive. 

Using the Microsoft Advertising MCP server, they deployed a Copilot agent that enabled their marketers to audit more campaigns faster, fundamentally changing how they work.

Unlike traditional AI tools that sit outside practitioners' workflows, the Stagwell Media Platform worked with Microsoft Advertising and Microsoft Customer and Partner Solutions engineers to embed AI into day-to-day operations.

Here’s how they did it:

  • Grounded in human expertise: They built a Copilot agent directly connected to the Microsoft Advertising platform through MCP server via Azure AI Foundry. It was trained on human-generated audit reports to ensure outputs are relevant, accurate, and aligned to real-world best practice.
  • Always-on expertise: The agent operates within the day-to-day workflow of Assembly teams, serving as an always-on senior search specialist working alongside them. 
  • Insight to action, faster: The agent pulls live campaign data, applies audit frameworks, provides recommendations, and creates client-ready outputs for practitioners to review and act on.
  • Human in the loop: Practitioners review outputs, apply judgment, and lead strategy, ensuring AI enhances, rather than replaces, human expertise.

 

"MCP agents that can securely connect to the systems we rely on every day unlock entirely new ways of working. Using M365 Copilot, Microsoft Advertising MCP server, and Azure AI Foundry, we've reduced campaign audit timelines from hours to minutes while building a scalable foundation for AI-driven transformation across media and marketing. This is not AI as a toolset. This is AI as infrastructure, embedded in how our media segments operate in Search at Stagwell."

— Dan Roberts, Global SVP Search, Stagwell Media Platform

Assembly transformed a previously manual, time-intensive process into a streamlined workflow, enabling teams to audit campaigns more frequently across markets and accounts. This shift supports a move from periodic reviews to continuous optimization.

Practitioners now spend less time on analysis and more time driving growth and helping clients act on insights. The approach also scales globally, improving consistency, and extending access to proven audit frameworks.

The result is a new way of working, where AI is embedded into everyday media operations and delivers value at scale. This also ensures greater consistency in recommendations across global teams, helping standardize performance.

Here's how to apply MCP in your advertising workflows:

  • Start where it matters most: Focus on repetitive, time-intensive processes that follow a consistent framework, such as campaign audits.
  • Use AI to accelerate, not replace: The MCP provides access to live data which AI agents use to generate outputs grounded in campaign performance. Practitioners remain in control, reviewing and making final decisions.
  • Make expertise repeatable: Build custom frameworks unique to your organization into the workflow so teams can deliver more consistent, high-quality outputs across markets and accounts. 

  •  Microsoft Advertising MCP server
  • Search
  • Copilot

Want to bring Microsoft Advertising MCP and Copilot agents into your advertising operations? Talk to a Microsoft Advertising expert to get started.