<p>Reliable cloud messaging as a service (MaaS) and simple hybrid integration. Depend on Azure Service Bus when you need highly-reliable cloud messaging service between applications and services, even when one or more is offline. Available in every Azure region, this fully-managed service eliminates the burdens of server management and licensing. Asynchronous operations give you flexible, brokered messaging between client and server, along with structured first-in, first-out (FIFO) messaging, and publish/subscribe capabilities—excellent for tasks like order processing.</p>