Complete course on multi-agent AI systems: CrewAI, AutoGen (Microsoft), LangGraph, OpenAI Swarm. Designing agent teams with different roles (researcher, writer, reviewer, coder), orchestration (sequential, hierarchical, graph-based), shared memory, human-in-the-loop, agent eval and testing, monitoring via LangSmith/Phoenix, production deployment. Capstone: building a multi-agent system for a real business problem.