Orchestrator Pattern Enables Scalable Agent Microservices

This post outlines using an orchestrator pattern to build distributed AI agent microservices, demonstrated with a Course Creator example using Google's Agent Development Kit (ADK), the Agent-to-Agent (A2A) protocol, Pydantic, and Cloud Run. It explains splitting responsibilities among researcher, judge, and orchestrator services, deployment scaling benefits, and security caveats like mTLS and authentication. The approach lets frontends call a single endpoint while independent services scale and enforce structured JSON outputs.