Azure Service Bus Questions (FAQ)

A topic can be visualized as a queue and when using multiple subscriptions, it becomes a richer messaging model; essentially a one-to-many communication tool. This publish/subscribe model (or pub/sub) enables an application that sends a message to a topic with multiple subscriptions to have that message received by multiple applications.

A Service Bus queue is an entity in which messages are stored. Queues are useful when you have multiple applications or multiple parts of a distributed application that need to communicate with each other. The queue is similar to a distribution center in that multiple products (messages) are received and then sent from that location.

A namespace provides a scoping container for addressing Service Bus resources within your application. Creating a namespace is necessary to use Service Bus and is one of the first steps in getting started.

Azure Service Bus is an asynchronous messaging cloud platform that enables you to send data between decoupled systems. Microsoft offers this feature as a service, which means that you don't need to host your own hardware to use it.