Microservices can rarely be designed in a manner that they do not need to communicate with each other. However, if you base your Microservices system on the DDD principle, there should be minimal communication required between the participant Microservices.

Cross-domain interactions of Microservices help reduce the complexity of individual services and duplication of code. We will take a look at some of the communication patterns in Chapter 18, Microservices Architectural Patterns. However, let us look at the various types of communication.