AB-100 study scenarios: three profiles

How you study for AB-100 depends mostly on which associate-level certification you already hold, because the exam is the same for everyone: 700 out of 1000 to pass, with Deploy worth 40 to 45 percent of the marks and Plan and Design worth 25 to 30 percent each. The three profiles below show where the hours go for an associate holder on Dynamics 365 or Power Platform, for an AB-620 holder, and for a consultant with no associate certification yet.

Example profiles, not real people. The profiles below are illustrative planning examples built from the official exam outline. They are not reviews or reports of anyone’s result.

The Dynamics 365 or Power Platform associate holder

Starting point. This candidate already holds one of the associate certifications on the prerequisites list, so the credential requirement is covered. They know Dynamics 365 apps or Power Platform well and have seen Copilot features inside them. They are comfortable with the Design domain’s customer experience, service, finance and supply chain items.

Where the time goes. The study plan allows compressing the planning and design weeks for this background. The saved time belongs in Deploy (40 to 45 percent): monitoring and tuning, test strategy, ALM for agents and custom models, and the security, governance and audit-trail objectives. Plan items that architects often skip are ROI and total cost of ownership, the model router, and the Cloud Adoption Framework adoption process.

The trap. Familiarity with the apps feels like readiness, but Deploy is about operating AI, not configuring it. Candidates from a functional-consultant background tend to answer ALM and governance questions with a configuration step instead of a process or a control.

Suggested order. Plan (ROI, build, buy or extend), then Deploy, then Design as a lighter pass focused on Copilot Studio and Foundry extensibility, including MCP.

Planning assumption. A reasonable planning assumption is three weeks at 8 to 10 hours a week, about 24 to 30 hours, with roughly 11 to 14 of them on Deploy. That is slightly above Deploy’s weight on purpose.

The AB-620 holder moving from building to designing

Starting point. This candidate has built agents in Copilot Studio, wired up MCP and connectors, and moved solutions between environments. The AB-620 versus AB-100 comparison covers how the scopes differ.

Where the time goes. Plan (25 to 30 percent) is the least familiar area: AI strategy, Center of Excellence elements, prompt libraries, when a custom or small language model is justified, and ROI analysis. Design adds Dynamics 365 copilots, Contact Center channels, and the Power Platform Well-Architected Framework. In Deploy, the Copilot Studio ALM items will be familiar, but ALM for Foundry Agents Service, custom models and data, plus responsible AI review and data residency, will not be.

The trap. Answering as a builder. AB-100 asks which platform and pattern fit a constraint and why, so an answer that describes how to configure the agent is usually not the one being asked for.

Suggested order. Plan first, then Design for the Dynamics 365 and Foundry items, then Deploy with a focus on governance, model security and audit trails.

Planning assumption. The standard four weeks at 8 to 10 hours, 32 to 40 hours in total, fits. By the weights that is roughly 8 to 12 hours on each of Plan and Design and 13 to 18 on Deploy.

The consultant with no associate certification yet

Starting point. This candidate understands business processes and has seen demos, but has not configured Copilot Studio or Foundry. The exam itself can be booked without any other certification, but the Expert credential needs an associate certification as well, which means a second exam to choose and prepare for.

Where the time goes. The study plan says to allow six to eight weeks when Copilot Studio and Foundry are new and to build something in each. Most of the extra weeks go into Design, where platform choice, agent types and extensibility only make sense after hands-on contact, and then into Deploy.

The trap. Treating the architect exam as the whole project. The associate choice affects which platform the credential vouches for, and is worth settling early: AB-620 suits a Copilot Studio direction, AI-103 a Foundry and Python direction.

Suggested order. Design first, so that the products are concrete; then Plan; then Deploy. This differs from the study plan’s order and is justified only by the starting point.

Planning assumption. Six to eight weeks at 8 to 10 hours is 48 to 80 hours, of which Deploy’s weight implies about 19 to 36 hours.

Three AB-100 profiles side by side

How to check which AB-100 profile fits before booking

Start with the exam format for the three weights and the October 14, 2026 outline update. Take the free sample questions cold and sort every miss into Plan, Design or Deploy. A cluster of misses in Deploy points to the first profile’s plan, in Plan to the second, and a spread of misses across everything to the third. Then follow the four-week study plan and confirm readiness with the 20-question practice test. If you are still choosing a route into the credential, the AB-620 guide covers the builder associate.

These hour counts are planning assumptions, not guidance from Microsoft, and they do not guarantee a pass.