What is Microsoft Message Queuing (MSMQ)? How does it work?

Question

I need to work with MSMQ (Microsoft Message Queuing). What is it, what is it for, how does it work? How is it different from web services?

Answer 1

As everyone has explained MSMQ is used as a queue for messages. Messages can be wrapper for actual data, object and anything that you can serialize and send across the wire. MSMQ has it's own limitations. MSMQ 1.0 and MSMQ 2.0 had a 4MB message limit. This restriction was lifted off with MSMQ 3.0. Message oriented Middleware (MOM) is a concept that heavily depends on Messaging. Enterprise Service Bus foundation is built on Messaging. All these new technologies, depend on Messaging for asynchronous data delivery with reliability.