AB-100 leads to Microsoft Certified: Agentic AI Business Solutions Architect Expert. It appeared in late 2025, and searches for the code have climbed to around 1,000 a month. To earn the certification you pass AB-100 and also hold one associate certification from a long list: AI-103, AI-300, AB-620, AB-210, AB-410, AB-250, PL-400, or one of several Dynamics 365 functional consultant and developer associates. The outline has three parts, with the English version updating on 14 October 2026. Planning AI-powered business solutions is 25 to 30%: assessing where agents fit, checking grounding data quality, applying the Cloud Adoption Framework, deciding between custom agents and extending Microsoft 365 Copilot, prompt libraries, small language models, the AI Center of Excellence, ROI and total cost of ownership, build versus buy, and model routers.
Designing solutions is 25 to 30%: Copilot in Dynamics 365 customer service and sales, Contact Center agents, task, autonomous and prompt-and-response agents, Copilot Studio topics, prompt actions, MCP extensibility, computer use, Power Apps and Power Platform Well-Architected. Deploying solutions is 40 to 45%: monitoring and tuning agents with telemetry, test strategy and validation of custom models, ALM for Copilot Studio, Foundry Agent Service and Dynamics AI features, plus responsible AI, security and governance. The good part is that weighting. The deploy section is the largest, and that is the right instinct. Designing an agent is easy, running a dozen of them across an enterprise with proper testing, monitoring, change control and security is where projects fail.
The planning section also pushes into ROI and build-versus-buy, which is the conversation architects actually have with clients. The weakness is breadth. The audience profile wants deep knowledge of core Dynamics 365 products, Power Platform, Copilot Studio, Foundry and Microsoft 365 Copilot all at once, and the objectives follow suit, with separate items on Finance and Supply Chain agent chats and Copilot for Sales configuration. Very few people genuinely work across all of that. Most candidates will be strong in two areas and cramming the rest, which tells you what the exam ends up measuring. There is also the usual expert-exam problem.
Architecture is about trade-offs in context, and a timed multiple-choice exam rewards knowing which product Microsoft wants you to pick. Pass it, but do not treat it as proof of architect judgement on its own. I give it 3.7. Valuable inside the Microsoft partner world and well weighted towards operations, but too broad and too Dynamics-centric for most AI professionals.