11. Architecture Decision Rationale

Component	Choice	Rationale
Java Gateway	Spring Boot	Enterprise-grade framework, excellent REST support, easy testing
Python Service	FastAPI	High performance, automatic API documentation, great async support
ML Library	stable-baselines3	Industry standard for PPO, well-tested, robust
Containerization	Docker	Consistent deployment, easy scaling, isolated environments
Communication	REST/JSON	Universal, stateless, easy to monitor, language-agnostic
Data Format	JSON	Human-readable, widely supported, easy serialization