Hundreds of partners including Adobe, SAP, ServiceNow and Workday have built third-party agents integrating with Copilot and Teams.

Judge as of July 2025. True: Microsoft materials or credible reports from on or before mid-2025 show that third-party agents built by partners integrate with Microsoft 365 Copilot and/or Teams, that each of Adobe, SAP, ServiceNow and Workday had built such an agent, and that the partners doing this numbered in the hundreds (at least about 100, for example the agent store or partner listings). Mostly true: hundreds of partners had built agents and three of the four named partners had, with the fourth announced but not yet shipped, or the integration being with Copilot but not Teams (or the reverse). Mixed: the named partners had built agents but the total was clearly below the hundreds (dozens). Mostly false: only a few partners, or only announcements with no built agents. False: evidence shows no such partner agents existed, or the named partners had not built them.

Set before the research began.

1. E1 Microsoft Build 2025: How to create a “frontier” workplace powered by agents | Microsoft Community Hub Microsoft Community Hub (Microsoft Copilot blog) · 19 May 2025 Own record

   “Our ecosystem includes hundreds of software development companies that are building agents, and tens of thousands of enterprises that are extending Copilot with line-of-business (LOB) agents.”

2. E2 Announcing new innovations for SAP on Microsoft Cloud | Microsoft Azure Blog Microsoft Azure Blog · 20 May 2025 Own record

   “The Joule custom engine agent is expected to be available in the Agent Store by the end of Q2 2025.”

3. E3 Announcing new innovations for SAP on Microsoft Cloud | Microsoft Azure Blog Microsoft Azure Blog · 20 May 2025 Own record

   “Today, we are excited to announce the general availability of Joule in Microsoft 365 Copilot.”

4. E4 What's new in Copilot Studio: May 2025 | Microsoft Copilot Blog Microsoft Copilot Blog · 4 June 2025 Own record

   “Right now, the Agent Store has more than 70 agents, ranging from knowledge assistants to complex multi-modal orchestrators.”

5. E5 What's new in Copilot Studio: May 2025 | Microsoft Copilot Blog Microsoft Copilot Blog · 4 June 2025 Own record

   “You’ll have access to more as makers and software development vendors build and share new agents in the coming months”

6. E6 What's new in Copilot Studio: May 2025 | Microsoft Copilot Blog Microsoft Copilot Blog · 4 June 2025 Own record

   “Welcome to the Agent Store, your centralized, curated marketplace for agents built by Microsoft, trusted partners, and customers.”

Microsoft's own posts say its ecosystem includes "hundreds of software development companies that are building agents" (E1). They also describe an Agent Store for partner-built agents that held more than 70 agents in June 2025 (E4, E6). Of the four named partners, only SAP is covered: Joule was announced as generally available in Microsoft 365 Copilot (E3), and its Agent Store listing was still only expected by the end of Q2 2025 (E2). No evidence covers Adobe, ServiceNow or Workday, and no independent source confirms the partner count, so the evidence does not meet the criteria for any verdict.