Stagwell (NASDAQ:STGW), the challenger network transforming marketing through AI, today announced an industry-first launch of the integration of Microsoft's Model Context Protocol (MCP), an open standard that enables AI to securely connect to live data, tools and workflows, where the Copilot agent is embedded directly into Stagwell's global media agency Assembly's paid search operations and live campaigns. The solution demonstrates how AI can move beyond testing and support day‑to‑day marketing at scale by connecting Copilot directly to Microsoft Advertising data and systems, enabling continuous analysis, auditing and generation of client‑ready outputs.