Azure Service Bus

Service Bus is a fully managed enterprise message broker with message queues and publish-subscribe topics. The service is intended for enterprise applications that require transactions, ordering, duplicate detection, and instantaneous consistency.

Service Bus enables cloud-native applications to provide reliable state transition management for business processes. When handling high-value messages that can't be lost or duplicated, use Service Bus. This service also facilitates highly secure communication across hybrid cloud solutions and can connect existing on-premises systems to cloud solutions.

Service Bus is a brokered messaging system. It stores messages in a "broker" (for example, a queue) until the consuming party is ready to receive the messages. It has the following characteristics:

• Reliable asynchronous message delivery (enterprise messaging as a service) that requires polling. If you're using Service Bus and you need to receive messages without having to poll the queue, you can achieve it by using a long polling receive operation using the TCP-based protocols that Service Bus supports.

• Advanced messaging features like first-in and first-out (FIFO), batching/sessions, transactions, dead-lettering, temporal control, routing and filtering, and duplicate detection: at least once delivery of a message and optional ordered delivery of messages.