The creation, storage, exchange, and management of text, images, voice, telex, fax, e-mail, paging, and Electronic Data Interchange (EDI) over a communications network.
1. A general term for technologies or services that move text or voice messages from user to user, application to application or place to place, providing a service analogous to that of the paper postal service and providing an infrastructure along which messages may be moved. Examples of messaging systems include e-mail, voice messaging and instant messaging. Systems that combine text and voice message functions are known as unified messaging systems. See instant messaging, voice mail and unified messaging. 2. A middleware term for a simple, one-way transfer of data; also known as "message passing." See message passing.
Broad term encompassing electronic communications, including electronic mail, Instant Messaging (IM), and chat rooms, all of which can be public records (see E-mail messages and e-mail system).