This book will cover different concepts of inter-service communication. They will be demonstrated through the Go programming language, its standard library, and popular third-party packages for concepts. Begin by understanding basic concepts such as clients, servers, and communication methods. Explore RESTful APIs and HTTP, the backbone of many systems. Learn about protocol buffers and gRPC for efficient data exchange. For asynchronous communication, discover message queuing with RabbitMQ and event-driven patterns with Redis. Lastly, explore event-driven architecture (EDA) and Apache Kafka for implementing this style of communication.