Microsoft · Professional Certification · Foundational
Microsoft 365 Certified: Copilot and Agent Administration Fundamentals (AB-900)
Crydd Score 83
Demand Growing
Career Value Moderate
Recognition Strong
AB-900 at a glance
- Provider
- Microsoft
- Credential type
- Professional Certification
- Exam required
- Yes
- Category
- IT Support
- Level
- Foundational
- Cost
- $99
- Difficulty
- Beginner
- Time to earn
- 2–4 weeks
- Validity
- Does not expire
- Format
- Proctored exam, 45 minutes
- Prerequisites
- None; Microsoft expects familiarity with Microsoft 365 services, security, identity and data protection, and with Copilot and agents
What is AB-900?
Microsoft's fundamentals certification for Microsoft 365 in the Copilot era: the core services and objects of Microsoft 365, data protection and governance for Microsoft 365 and Copilot, and basic administration of Copilot and agents. It replaced Microsoft 365 Fundamentals (MS-900), retired on 31 March 2026.
Skills it covers
- Microsoft 365 services
- Data protection and governance
- Copilot administration
- Agent administration
Is AB-900 worth it? The Crydd Verdict
CS 83Choose it if
You support or administer Microsoft 365, or are starting to, and your organisation is rolling out Copilot and agents.
Consider alternatives if
You already manage devices and apps day to day: the Endpoint Administrator Associate (MD-102) goes further. For security-focused basics, SC-900.
Why we say so
A short, inexpensive first credential covering what Microsoft 365 administrators are now asked about most: Copilot, agents, and the data governance around them.
Market demand
Microsoft 365 skills are requested across IT support and administration roles; as a fundamentals certification it supports an application rather than anchoring it.
Where AB-900 takes you
- IT Support Specialist
- Systems Administrator
- Help Desk Technician
Career roadmaps show where this certification fits in each path. See the roadmaps.
Related certifications
Curated connections from the catalog — each labelled with how it relates to AB-900, so you know why it’s here.
Careers AB-900 leads to
The professional paths this certification genuinely serves — browse every relevant credential for each.
A sensible order
Where AB-900 sits on the path — build up, then step on.
Recommended next after AB-900
A step up on a shared path
