How long does it take to read the AB-900 notes?

About 2 hours of reading in total (119 minutes across 7 lessons), spread over 3 exam domains. Most people spread that across a couple of weeks alongside practice questions rather than reading it in one sitting.

Do the notes cover the whole AB-900 exam guide?

They are written against the official Microsoft Azure exam guide for the AB-900: every domain and every topic in the blueprint has notes mapped to it, and the weightings shown on this page are the ones Microsoft Azure publishes.

Are revision notes enough to pass the AB-900 on their own?

Reading alone rarely is. The notes give you the model of how the services fit together, but the AB-900 tests whether you can apply it to a scenario under time pressure. Pair the notes with practice questions and at least one full-length timed mock before you book the real exam.

Do I need to read them in order?

No. Each lesson is self-contained and mapped to one topic in the blueprint, so you can jump straight to a weak area. If you have no cloud background, working down the domains in weight order is the safest default.

AB-900 revision

AB-900 study guide — free revision notes

The complete Microsoft 365 Certified: Copilot and Agent Administration Fundamentals study library — 7 lessons mapped to every domain and topic in the official exam guide. Free to read, no account needed.

Lessons: 7
across 3 domains
Reading time: 2 hrs
119 minutes in total
Exam: 45 Qs
45 min · pass 700 / 1000
Price: Free
no account required

Cheat sheet

Core Objects of Microsoft 365 Services

AB-900 Core Objects: Microsoft 365 Licenses and the Exchange, SharePoint and Teams Admin Centers17 min

Microsoft 365 Security Principles

AB-900 Microsoft 365 Security Principles: Zero Trust, Authentication, Authorization and Defender XDR13 min

Core Security Features of Microsoft 365

AB-900 Microsoft Entra ID Security Features: Conditional Access, SSO, PIM, Secure Score and Logs19 min

Create a free account to track completed lessons, bookmark topics and see your exam readiness. · Pro lessons unlock with a one-time upgrade.

The AB-900 blueprint, domain by domain

Microsoft Azure publishes exactly what the AB-900 tests and how much each part is worth. Here it is — every domain, its weight, the topics inside it, and the lessons that cover them.

Domain 1

Identify the core features and objects of Microsoft 365 services

33%

of the exam

Licensing and the Microsoft 365, Exchange, SharePoint and Teams admin centers, Zero Trust, authentication and authorization, Defender XDR, Microsoft Entra ID, conditional access, SSO, Identity Secure Score, audit logs, PIM and app registrations. Official weight range 30–35%.

3 topics in this domain

Core Objects of Microsoft 365 Services
Microsoft 365 Security Principles
Core Security Features of Microsoft 365

3 lessons · 49 min of reading · 70 practice questionsStart this domain

Domain 2

Understand data protection and governance tasks for Microsoft 365 and Copilot

38%

of the exam

Microsoft Purview (Information Protection, DLP, Insider Risk Management, Communication Compliance, DSPM for AI, Data Lifecycle Management), sensitivity labels, classification and retention, how Copilot accesses data through Microsoft Graph and permissions, responsible AI, and finding risks and oversharing. Official weight range 35–40%.

2 topics in this domain

Microsoft Purview and Copilot Data Security
Data Protection Risks and SharePoint Oversharing

2 lessons · 38 min of reading · 82 practice questionsStart this domain

Domain 3

Perform basic administrative tasks for Copilot and agents

29%

of the exam

Copilot and agent capabilities, Researcher and Analyst, licensing vs pay-as-you-go, enabling features, assigning licenses, billing policies, usage and adoption reporting, prompts, and creating, approving, governing and monitoring agents. Official weight range 25–30%.

2 topics in this domain

Copilot and Agent Features and Capabilities
Copilot and Agent Administration

2 lessons · 32 min of reading · 62 practice questionsStart this domain

How to revise for the AB-900

Reading every note front to back is the slowest way to pass. The exam is weighted, so your revision should be too — the blueprint above tells you exactly where the marks are.

Read in weight order, not page order

Understand data protection and governance tasks for Microsoft 365 and Copilot carries the most marks on the AB-900, so it earns the most of your attention. Work down the blueprint from the heaviest domain to the lightest rather than starting at domain 1 and grinding forward.

First pass for coverage, second pass for recall

Read each lesson once without stopping to memorise — you are building a map, not a memory. On the second pass, read only the "what's tested" and key-takeaway blocks. If a takeaway surprises you, that lesson goes back on the pile.

Turn takeaways into questions

Cover a lesson's key takeaways and try to say them out loud from the heading alone. Recall you can produce under your own steam is the only recall that survives a timed exam; recognition on a re-read is not the same thing.

Stop reading when practice, not the page count, says so

Finishing the notes is not the goal — scoring is. Move to AB-900 practice questions early, then come back to the exact lessons your wrong answers point at. That loop is worth far more than a third read-through.

Beyond the AB-900 notes

AB-900 revision notes: your questions

Yes. All 7 AB-900 lessons are readable in full without an account and without payment. Creating a free account adds progress tracking, bookmarks and a readiness score — it does not unlock extra reading.

Source

Exam structure, domain weights and scoring on this page come from the official AB-900 exam guide.

Study guide for Exam AB-900: Microsoft 365 Copilot and Agent Administration Fundamentals (Microsoft Learn) — Microsoft