Event-Driven Architectures and AWS EventBridge

In an event-driven architecture, the decoupled services interact with each other through events. An event can be any substantial change or important business event, such as a transaction, adding reviews, or sensory information. This software design pattern is commonly used in architectures made out of microservices.

A typical event-driven architecture has three important components, which are as follows:

• Event producer: The component or system responsible for generating and publishing events. It can be any microservice or third-party software application that emits events. Also, CloudTrail events can be used as a producer.

• Event router: This component routes the events from producer to consumer. An example of the event router is an event bus that maps the producer’s events to consumers.

• Event consumer: This is the component or system that receives and responds to events. Event consumers subscribe to specific types of events and perform actions based on the occurrence of those events.

Solution architects can build an event-driven architecture in their cloud applications using Amazon EventBridge. Amazon EventBridge is an event management service. It allows us to connect components of a loosely coupled application through events. This spares the developers the hassle of writing code to trigger or invoke components. EventBridge is effectively used to route, filter, and process events among AWS services, SaaS applications, and custom applications.