Microsoft · Advanced

Microsoft Agentic AI Business Solutions Architect (AB-100) practice exam & study guide

The Microsoft Agentic AI Business Solutions Architect (AB-100) is Microsoft’s advanced certification for architects who design agentic-first AI business solutions. It validates the ability to plan, design, and deploy multi-agent, AI-powered solutions across Dynamics 365, Microsoft Power Platform, Copilot Studio, and Microsoft Foundry.

AB-100 is an advanced, architect-level exam. Questions test how you plan AI strategy and ROI, design agentic and multi-agent solutions, and deploy them with monitoring, testing, ALM, security, and responsible-AI governance across the Microsoft business-applications stack.

This free hub gives you everything you need to prepare: a syllabus breakdown by exam domain, realistic scenario-style practice questions with teacher-style explanations, a glossary of the agentic-AI and Microsoft business-application concepts the exam relies on, and full-length timed mock exams that mirror the real testing experience.

60
Questions
100 min
Time limit
70%
Mock pass %
3
Domains

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  1. 1
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  2. 2
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    Practice one topic at a time with explained answers.

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  3. 3
    Sit a timed mock

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All AB-100 study resources

AB-100 exam domains

The AB-100 exam is weighted across 3 domains. Pick any domain below to drill it — or read the full breakdown in the FAQ.

Exam domainExam weightPractice
Plan AI-powered business solutions28%Practice this topic
Design AI-powered business solutions28%Practice this topic
Deploy AI-powered business solutions44%Practice this topic

Sample AB-100 questions

A sample of the AB-100 questions on this hub. Each links through to the full question, the correct answer, and an explanation of why every other option is wrong.

Key AB-100 terms

Start with these terms, then explore the full glossary. Each links to a plain-English definition written for the AB-100 exam.

AB-100 frequently asked questions

What is the AB-100 certification?+

Microsoft positions the Agentic AI Business Solutions Architect as an accomplished solution architect who designs and delivers AI-driven business solutions using multiple Microsoft services, with expertise in agentic-first and multi-agent orchestration.

It expects command of Dynamics 365, Power Platform, Copilot Studio, Foundry Tools and Models, open protocols (A2A and MCP), ROI analysis, and responsible-AI security and governance.

What topics are on the AB-100 exam?+

The AB-100 exam is organised into three weighted domains. This hub reflects Microsoft’s skills-measured update effective July 22, 2026 — the domain groups are unchanged, with only minor sub-topic revisions. The percentages below are the midpoints of Microsoft’s published ranges (for example 40–45%), normalized to total 100. Deploying AI-powered business solutions carries the most weight.

Plan AI-powered business solutions (28%)

Covers analyzing requirements (agents for automation, analytics, and decision-making; reviewing data for grounding), designing the overall AI strategy (Cloud Adoption Framework, multi-agent solutions, custom vs prebuilt agents, prompt libraries, AI Center of Excellence), and evaluating costs and benefits (ROI, total cost of ownership, build/buy/extend, model router).

Design AI-powered business solutions (28%)

Covers designing AI and agents (Copilot in Dynamics 365, task/autonomous/prompt-and-response agents, Copilot Studio topics and agent flows), designing extensibility (custom Foundry models, Model Context Protocol, Computer Use, agent behaviors), and orchestrating configuration for prebuilt agents and Dynamics 365 / Microsoft 365 apps.

Deploy AI-powered business solutions (44%)

The largest domain. Covers analyzing, monitoring, and tuning solutions (telemetry, metrics), managing testing (validation criteria, end-to-end scenarios), designing the ALM process (agents, connectors, custom models, data), and designing responsible AI, security, governance, risk, and compliance including prompt-manipulation mitigations and audit trails.

Is the AB-100 hard?+

AB-100 is an advanced architect exam that expects real design judgment across the full Microsoft AI and business-applications stack — not recall. Questions are scenario-based and often turn on the right orchestration, extensibility, or governance choice.

The difficulty comes from the breadth across Dynamics 365, Power Platform, Copilot Studio, and Foundry plus deep agentic-design and responsible-AI security topics. Real architecture experience is the key. Earning the certification also requires a prerequisite associate certification.

How many questions are on the AB-100 exam and how long is it?+

Microsoft does not fix a single public question count for AB-100; it typically presents roughly 40–60 questions in a mix of formats — multiple choice, multiple response, and case studies — and Microsoft allots 100 minutes to complete the assessment.

Our full-length practice mock uses a 60-question, 100-minute session so you can rehearse pacing under realistic time pressure before test day.

What score do you need to pass the AB-100?+

Microsoft scores AB-100 on a scale of 1 to 1,000, and the passing score is 700. That is a scaled score rather than a raw 70%, because Microsoft adjusts for question difficulty, and there is no penalty for wrong answers, so you should never leave a question blank. Our practice mock uses a 70% threshold to give you a comparable target.

How much does the AB-100 exam cost?+

The AB-100 exam fee is set by Microsoft and varies by region — check the Microsoft certification page for current pricing. Microsoft certifications are valid for one year and can be renewed for free through an online assessment on Microsoft Learn. Note that earning this certification also requires a prerequisite associate certification. Everything on this hub is free.

Who should take the AB-100?+

AB-100 is aimed at experienced solution architects who design AI-driven, agentic business solutions across Microsoft Dynamics 365, Power Platform, Copilot Studio, and Foundry.

Microsoft requires a prerequisite associate certification to earn it (for example the Azure AI Apps and Agents Developer, a Dynamics 365 associate, or a Power Platform associate), and expects substantial architecture experience.

What jobs and salaries can the AB-100 lead to?+

AB-100 maps to roles such as AI solution architect, agentic-AI architect, and enterprise Dynamics 365 / Power Platform architect leading AI transformation.

How much any certification affects pay depends heavily on geography, seniority, and hands-on experience, so treat any single salary figure with caution. AB-100 is best viewed as validation of advanced AI-architecture skill rather than a guaranteed raise on its own.

How long does it take to study for the AB-100?+

Given the advanced scope, candidates often need several weeks even with architecture experience; those new to agentic design should plan longer. The most efficient path is to study each domain while designing and prototyping agent solutions in Copilot Studio and Foundry.

Review every explanation, including for questions you answered correctly, because AB-100 distractors are built from plausible but incorrect architecture choices. Use the per-domain results here to find and shore up your weakest area, then finish with full-length timed mocks.

How should you prepare for the AB-100?+

Study the three domains above, giving the heaviest weight to deploying AI-powered business solutions, then drill scenario questions domain by domain. Every MockAPI question reveals a full explanation and tells you why each wrong answer is wrong — essential for a scenario-driven architect exam.

When you can answer scenarios comfortably, move to full-length timed mocks alongside hands-on design practice. Use the glossary to keep concepts like multi-agent orchestration, MCP, A2A, and model routing straight, and aim to score consistently above the pass mark before you book.

Can you take the AB-100 exam online?+

Yes. Microsoft delivers AB-100 through Pearson VUE, so you can test at a physical Pearson VUE centre or online with remote proctoring (OnVUE). The online exam requires a private, quiet room, a clear workspace, a webcam and microphone, a stable connection, and government-issued photo ID, with a proctor monitoring you and a room scan before you start.

If you do not pass, Microsoft requires a 24-hour wait before a second attempt; after that, a 14-day wait applies between further attempts, with a limit of five attempts in a 12-month period, and each attempt needs its own registration.

What certification should you take after the AB-100?+

AB-100 is itself an advanced credential; after it, architects often deepen into specific Dynamics 365 or Power Platform associate tracks, or the Azure AI Apps and Agents Developer (AI-103) for hands-on build depth.

For many, the real next step is leading agentic-AI architecture in production across an enterprise. Pairing AB-100 with hands-on delivery is what turns the certificate into a career.