Microsoft Certified: Copilot and Agent Administration Fundamentals (AB-900)

Certification

New fundamentals certification (2026) on administering Microsoft 365 Copilot and agents.

Glossary

Related topics in brief

• Microsoft · Developed by · Organization
  Microsoft Corporation is a technology company that develops software and cloud services such as Microsoft 365, Azure and Dynamics 365.
• Microsoft 365 Copilot · Covers · Product
  An AI assistant built into Microsoft 365 apps such as Word, Excel, Outlook and Teams. It uses large language models together with the user's own work data from Microsoft Graph to draft, summarise and analyse content, always within the user's existing permissions.
• Copilot Studio · Covers · Product
  Microsoft's low-code platform for building, customising and publishing AI agents and copilots. Makers define topics, knowledge sources, actions and flows and can publish the result to Teams, websites or Microsoft 365 Copilot.
• Microsoft 365 Copilot Chat · Covers · Product
  Secure, web-grounded AI chat for Entra ID users that is included at no extra cost and can run agents; the paid Microsoft 365 Copilot adds work-data grounding.
• Microsoft 365 Certified: Fundamentals (MS-900) · Similar to · Certification
  Entry-level Microsoft 365 fundamentals exam. Retired on 31 March 2026; Microsoft plans no direct replacement (see AB-900 for Copilot and agent administration).