What is Event Messaging?

Event messaging is a software architecture and communication pattern that allows different services and applications to communicate with each other through the exchange of events. An event is a record of a significant state change. Event messaging facilitates loosely coupled, asynchronous communication, where services don't need to know about each other directly. A service publishes an event to an event bus or message broker, and other services that are interested in that event subscribe to it and process it accordingly. Common uses include inter-service communication in microservices architectures, real-time data processing, and building reactive systems.