What Is Message Bus Architecture

A Message Bus is a combination of a common data model, a common command set, and a messaging infrastructure to allow different systems to communicate through a shared set of interfaces.

How does message bus work?

Unlike queues, where the sending application explicitly adds messages to every queue, a message bus uses a publish/subscribe model. Messages are published to the bus, and any application that has subscribed to that kind of message will receive it.

Why do we need a message bus?

The primary benefit of a message bus architecture is that data is freely available. Services just provide data and don’t mandate how it is used. You still have the necessary coordination in developing a system; part a generates messages like this and part b will do that.