AB-620 study resources

AB-620 is a design exam. It asks which construction satisfies a stated constraint, so the fastest preparation is to build one agent end to end — with a knowledge source, an action that writes data, and an escalation to a human. Microsoft Learn covers the syllabus; the build is what makes the questions obvious.

Start with the official material

The skills outline. Three areas: planning and configuring agent solutions (30–35%), integrating and extending agents in Copilot Studio (40–45%), and testing and managing agents (20–25%). The integration area is the largest single block in the exam.

Microsoft Learn. Free, modular and aligned to the outline. Give the integration modules the most time, in proportion to their weight.

Power Platform documentation for the surrounding concepts — environments, connections, solutions, flows. AB-620 assumes this rather than teaching it, and it is where candidates from a pure AI background lose marks.

Build one agent properly

Not a demo. One agent that does all of this:

• Grounds on a document library someone else maintains, so you see why that is more maintainable than hard-coded topics.
• Calls an action that writes to a system, so you meet error handling and what happens when a flow times out.
• Carries a variable between topics, so the conversation-scoped versus topic-scoped distinction stops being abstract.
• Escalates to a human with context preserved.
• Moves from development to production, so you hit the connection references and environment variables that do not carry across. This is the single most common real-world failure and it appears on the exam.

A developer trial environment is enough.

Worth paying for

Practice tests for diagnosis. Start with the free 20-question test, which is weighted to the real proportions.

Nothing else, usually. The official material plus build time covers this exam well. If Power Platform itself is new to you, time spent learning that platform is better value than an AB-620-specific course.

What to skip

Braindumps, as always — terms violation and revocation risk, and they do not survive scenario questions.

Deep AI theory. This exam does not ask how a transformer works. It asks whether you would ground an agent on a maintained knowledge source or hard-code the answers.

Memorising menu locations. Copilot Studio’s interface changes. The exam tests design decisions.

A sensible order

1. Read the skills outline. Note that integration is the biggest block.
2. Work through Microsoft Learn, weighting towards integration.
3. Build the agent described above, including the move to a second environment.
4. Take the practice test.
5. Revisit whichever area scored worst, in the documentation rather than a summary.

AB-620 or AI-103?

The difference is whether you write code. If you build agents through configuration, this is your exam; if you write Python against Azure AI Foundry, AI-103 is. The Azure AI certification path explains the split, and AB-620 vs Agentforce Specialist covers the cross-platform comparison.