Throughout this lecture, we have journeyed from the high-level theory of microservices to their practical implementation. We began by contrasting the rigidity of monolithic architecture with the agility of MSA. We then explored the foundational principles of independence and loose coupling, the architectural patterns for scaling and composition, and the broader ecosystem of management and security. Finally, through two hands-on labs, we first built a traditional SOA application to understand the baseline and then constructed a true microservice orchestrator, demonstrating how to compose functionality from disparate, independent services. This comprehensive study provides a solid foundation for understanding, designing, and building applications using modern microservice architecture.