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Definition: MMS

(1) (Multimedia Messaging Service) Sending an image, audio, video, emoji or website link via text messaging. SMS is the text-only protocol, but when data other than plain text are transmitted, MMS is used. MMS was developed as part of the 3GPP project. See MMSC, SMS, 3GPP, punchcasting and photo messaging.

(2) (Microsoft Media Streaming) An earlier streaming protocol from Microsoft (originally NetShow Services). MMS was dropped in Windows Server 2003 (Windows Media Services 9) and superseded by the realtime streaming protocol (see RTSP). See NetShow.