Azure Service Bus is a Cloud-based messaging solution that provides a robust infrastructure while connecting different endpoints. Although Microsoft releases new features continuously, Azure Service Bus is already a very complete platform, composed by:
Queues: An entity supporting brokered messages where there are one or more producers and one or more consumers. A queue is often used to decouple systems and to perform asynchronous communication/computation between parties.
Topics: An entity supporting brokered messages where there are one or more publishers and one or more subscribers. The differences with the queues are many, but the most important is that a published message is propagated to every valid subscriber, making it suitable for notification mechanisms, while queues are more suitable for processing (a message is processed by only one receiver, if multiple).
Event Hubs: A feature specially designed to ingest high volumes of messages, persisting them...