Service Bus AMQP: Developer's Guide
The Advanced Message Queuing Protocol (AMQP) 1.0 is an efficient, reliable, wire-level messaging protocol that you can use to build robust, cross-platform, messaging applications. Support for AMQP 1.0 in Windows Azure Service Bus means that you can use the queuing and publish/subscribe brokered messaging features from a range of platforms using an efficient binary protocol. Furthermore, you can build applications comprised of components built using a mix of languages, frameworks, and operating systems.
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