Microsoft 365 and admin center familiarity
RecommendedMicrosoft expects familiarity with Microsoft 365 services, security, identity, data protection and governance, and with the Exchange, SharePoint, Teams, Entra and Purview admin centers.
Microsoft 365 Certified: Copilot and Agent Administration Fundamentals (AB-900)
Validates foundational knowledge of Microsoft 365 services, data protection and governance, and basic administration of Copilot and agents.
Summary
AB-900 is Microsoft's entry-level certification for administering an AI-enabled Microsoft 365 environment. It covers core Microsoft 365 services and security, Purview data protection and governance, and basic Copilot and agent administration, giving employers a foundation for managing AI tools safely.
Good fit if
- You are new to Microsoft 365 administration
- Your organization is rolling out Microsoft 365 Copilot
- You want to add Copilot and agent administration skills
Look elsewhere if
- You already run Microsoft 365 daily: an associate exam such as AB-650
- You want a security-first credential: SC-900
Prerequisites
Cost
Renewal
AB-900 does not expire.
- Validity
- No expiry
- Renewal requirement
- None
Microsoft Fundamentals certifications have no renewal assessment and no fee.
Renew your Microsoft certification ↗Alternatives
AI-901$99 required · Entry
A broader, cloud-focused AI fundamentals credential if your interest is Azure AI services rather than Microsoft 365 Copilot administration.
SC-900$99 required · Entry
Goes deeper on the Entra ID, Defender and Purview concepts that AB-900 only touches.
PL-900$99 required · Entry
Same no-experience format, for business users and citizen developers working with Power Platform instead of Copilot administration.
FAQ
Does the AB-900 certification expire?
No. Microsoft Fundamentals certifications do not expire and have no renewal fee.
Is AB-900 the replacement for MS-900?
No. Microsoft retired MS-900 on March 31, 2026 and says no new certification is planned to replace it. AB-900 is a separate Fundamentals certification that covers much of the same Microsoft 365 ground plus Copilot and agents.
How many questions are on the AB-900 exam?
Microsoft does not publish a fixed number. Most Microsoft exams have 40 to 60 questions, and AB-900 gives you 45 minutes.
Can I use Microsoft Learn during the AB-900 exam?
No. Microsoft Learn is available only on associate and expert exams, not Fundamentals.
Do I need Copilot or agent experience to pass?
No experience is required, but time in the Microsoft 365, Purview and Copilot admin centers makes the scenario questions easier.
Last updated October 2026