2. Integrate and Extend Agents in Copilot Studio (40–45%)

This is the exam's center of gravity: nearly half your score rides on knowing how to connect an agent to enterprise knowledge, arm it with tools, make it collaborate with other agents, and back it with Azure services. The good news is that Phase 1 already gave you the frames — every knowledge source here is RAG with a different retrieval target, every tool type is a different answer to "how does the agent act?", and every multi-agent pattern is delegation with different plumbing. This phase turns those frames into the specific product mechanics AB-620 tests.