Remote Communication. Messaging enables separate applications to communicate and transfer data. Two objects that reside in the same process can simply share the same data in memory. Sending data to another computer is a lot more complicated and requires data to be copied from one computer to another. This means that objects have to be “serializable”—that is, they can be converted into a simple byte stream that can be sent across the network. Messaging takes care of this conversion so that the applications do not have to worry about it.
