- AB-900 is Microsoft's official name for "Microsoft 365 Copilot and Agent Administration Fundamentals."
- Data protection and governance (Domain 2) is the largest domain at 35-40% of the exam.
- The exam runs 45 minutes inside a 65-minute proctored appointment, with a scaled passing score of 700/1000.
- There are no formal prerequisites, but familiarity with Microsoft 365, identity, and governance concepts is expected.
What AB-900 Actually Is
AB-900 is the exam code Microsoft assigns to Microsoft 365 Certified: Copilot and Agent Administration Fundamentals. It is a Microsoft Corporation credential focused specifically on how administrators configure, govern, and manage Microsoft 365 Copilot and the agents built on top of it. If you've landed here because you saw "AB-900" referenced elsewhere and assumed it was a different certification with a different certifying body, different fees, or different pass rates - it isn't. This site covers exactly one AB-900: the Microsoft 365 Copilot and agent administration fundamentals exam, and every fact in this article is scoped to that credential.
Because it's a Fundamentals-level exam, AB-900 is designed to validate baseline understanding rather than deep technical mastery. It sits alongside other Microsoft "900-series" fundamentals exams in spirit - broad, conceptual, and administrator-facing - but its content is entirely about Microsoft 365 services, data governance, and Copilot/agent administration. If you want a deeper breakdown of exactly how those topics are weighted, the AB-900 Exam Domains 2026: Complete Guide to All 3 Content Areas walks through each domain in more detail than we can cover here.
Who Issues and Delivers AB-900
AB-900 is a Microsoft-owned certification. Exam delivery runs through Pearson VUE, Microsoft's long-standing testing partner for certification exams, with Certiport also listed as a delivery option for students and educators. That dual-channel setup mirrors how Microsoft handles several of its other fundamentals-level exams: professionals typically book through Pearson VUE, while academic test-takers often go through Certiport instead.
The exam is delivered as a proctored, computer-based test, and Microsoft's listing indicates the exam may include interactive item types in addition to traditional multiple-choice questions. The exact mix of question formats isn't publicly broken down, so it's worth treating the exam experience as "mostly familiar multiple-choice and multi-select, plus possible interactive elements" rather than expecting a single rigid format throughout.
The Three AB-900 Exam Domains
Microsoft organizes AB-900 around three named domains. These domain names and their relative weightings come from the current published exam guide, and Microsoft has already flagged an English-language update scheduled for October 14 (a future date relative to this writing), so it's smart to double-check the live exam page before you sit the test in case weights shift slightly.
Domain 1: Identify the core features and objects of Microsoft 365 services (30-35%)
This domain establishes the foundation everything else builds on. Candidates need working familiarity with the core Microsoft 365 service landscape - the objects, roles, and building blocks that Copilot and agents ultimately operate against.
- Recognizing core Microsoft 365 services and how they relate to each other
- Understanding key objects and identities within the Microsoft 365 ecosystem
- Connecting basic service concepts to how Copilot consumes and surfaces data
Domain 2: Understand data protection and governance tasks for Microsoft 365 and Copilot (35-40%)
This is the largest domain on the exam, and it's where a meaningful share of your study time should go. It centers on how organizations protect data, enforce governance, and control what Copilot and agents can see, use, or generate.
- Data protection concepts as they apply specifically to Copilot and agent scenarios
- Governance controls that shape what information agents can access
- How administrators oversee compliance-related settings tied to Copilot usage
Domain 3: Perform basic administrative tasks for Copilot and agents (25-30%)
The third domain moves from concepts into hands-on administration - the practical, day-to-day tasks an admin performs to manage Copilot and agents inside a Microsoft 365 tenant.
- Core administrative actions for enabling and managing Copilot
- Basic agent configuration and oversight tasks
- Recognizing where administrative responsibility for Copilot/agents fits within broader Microsoft 365 admin duties
Because Domain 2 carries the heaviest weight, it deserves outsized attention in your prep. If you're mapping out a full study plan, the AB-900 Study Guide 2026: How to Pass on Your First Attempt goes further into sequencing your review around domain weight, and the AB-900 Cheat Sheet 2026: One-Page Review of Must-Know Facts is useful for a fast pre-exam refresher across all three domains.
Exam Format, Timing, and Passing Score
AB-900 gives you 45 minutes to complete the exam itself, inside a standard 65-minute total appointment - the extra time covers check-in, the NDA agreement, and any tutorial screens before the timed exam starts. Microsoft has not published the exact total question count, nor the split between scored and unscored items, for AB-900 specifically. It's common to see figures like "40-60 questions" cited for Microsoft exams generally, but that's a general Microsoft-wide pattern, not a confirmed count for this exam, so treat any specific number you see elsewhere with caution.
To pass, you need a scaled score of 700 out of 1000. That scaled number is not the same as "70% of questions correct" - Microsoft weights questions differently based on difficulty and domain, so the raw percentage needed to reach 700 isn't publicly disclosed. For a full breakdown of what the scaled scoring model means in practice, see AB-900 Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Don't fixate on hitting a specific percentage of correct answers. Focus on solid coverage of all three domains - especially Domain 2 - since the scaled scoring model rewards overall competence rather than raw question count.
| Exam Detail | What AB-900 Specifies |
|---|---|
| Timed exam length | 45 minutes |
| Total appointment length | 65 minutes |
| Passing score | 700/1000 (scaled) |
| Delivery | Proctored, computer-based; possible interactive items |
| Delivery partners | Pearson VUE; Certiport (students/educators) |
| Certification validity | Does not expire; no renewal assessment |
Who Should Take AB-900
Microsoft doesn't attach a formal eligibility gate to AB-900. There's no required degree, no prerequisite certification, and no mandated hours of training or experience listed for the exam. That said, "no formal requirement" doesn't mean "no expectation." Microsoft's own guidance assumes candidates already have some familiarity with Microsoft 365, identity concepts, governance basics, and how Copilot fits into an administrative role. If those areas are brand new to you, spend time getting oriented before diving into exam-specific prep - the full breakdown of what's expected (and what isn't) lives in AB-900 Requirements 2026: Eligibility, Prerequisites & How to Qualify.
In practice, this exam tends to attract:
- Microsoft 365 administrators expanding into Copilot and agent oversight
- IT professionals responsible for governance and data protection policy in Microsoft 365 environments
- Compliance and security-adjacent staff who need to understand how Copilot interacts with organizational data
- Students and career-changers using Certiport delivery to build a foundational Microsoft credential
If you're trying to gauge whether the effort is worthwhile relative to your career goals, Is the AB-900 Certification Worth It? Complete ROI Analysis 2026 and AB-900 Jobs both dig into how the credential is actually used on the job market, and AB-900 Salary Guide 2026: Complete Earnings Analysis looks at compensation considerations without relying on invented figures.
Registration and Cost Basics
Registration happens through Pearson VUE for most professional candidates, with Certiport available as an alternate path for students and educators. One important clarification: the current official U.S. checkout price for AB-900 has not been independently verified as of this writing. You'll sometimes see a figure like US$99 cited online, but that number comes from third-party references rather than a confirmed official source, so don't treat it as guaranteed. There's also no member/non-member pricing tier for this exam, and any exam prep materials or Copilot licensing costs are billed completely separately from the exam fee itself.
Given that pricing can shift and isn't fully confirmed, it's worth checking the live registration page directly before you book, and reading AB-900 Certification Cost 2026: Complete Pricing Breakdown for a fuller picture of what to budget for beyond just the exam fee. Scheduling windows and appointment availability are covered separately in AB-900 Exam Dates 2026: Testing Windows, Deadlines & Scheduling, which is helpful if you're trying to time your exam around the October 14 update mentioned earlier.
Building a Study Approach Around the Domains
Rather than following a generic study formula, the most efficient path through AB-900 prep is to let the domain weights dictate your time allocation. Since Domain 2 (data protection and governance) accounts for 35-40% of the exam - the largest share - it deserves the largest block of your study time, followed by Domain 1's Microsoft 365 fundamentals, then Domain 3's hands-on administrative tasks.
Microsoft 365 Core Concepts (Domain 1)
- Review core Microsoft 365 services, roles, and objects
- Understand how these building blocks feed into Copilot
Data Protection and Governance (Domain 2)
- Study governance controls affecting Copilot and agent access
- Focus extra time here given the 35-40% weighting
Copilot and Agent Administration (Domain 3)
- Practice recognizing core administrative tasks and settings
- Connect governance decisions from Week 2 to hands-on admin actions
Review and Practice
- Run through practice questions covering all three domains
- Revisit weaker domains identified during review
If you'd rather validate your readiness before booking an exam appointment, practicing under timed, exam-style conditions on our practice test platform is one of the more reliable ways to see whether your Domain 2 knowledge in particular holds up under pressure. For a broader look at how challenging candidates generally find the exam, How Hard Is the AB-900 Exam? Complete Difficulty Guide 2026 is a useful companion read, and AB-900 Pass Rate 2026: What the Data Shows covers what's actually known - and not known - about outcomes.
Key Takeaway
Spend proportionally more study time on Domain 2 than the other two domains combined-weight suggests isn't necessary - its 35-40% share makes it the single highest-leverage area to master before exam day.
Frequently Asked Questions
Not necessarily. On this site, AB-900 refers exclusively to Microsoft 365 Certified: Copilot and Agent Administration Fundamentals, issued by Microsoft. Other credentials may reuse the same code for entirely unrelated content, so always confirm which "AB-900" you're researching.
The timed exam itself is 45 minutes, delivered within a standard 65-minute proctored appointment that also includes check-in and administrative steps.
You need a scaled score of 700 out of 1000. This is not a straightforward "percent correct" measure, since Microsoft weights questions by domain and difficulty.
No formal degree, prior certification, or documented experience is required. Microsoft does expect general familiarity with Microsoft 365, identity, governance, and Copilot administration concepts going in.
No. As a Fundamentals-level certification, AB-900 does not expire and does not require a renewal assessment or continuing-education credits once earned.