(also inter-process communication, IPC)
Message passing enables processes, threads, and systems to send and receive messages in a concurrent, parallel, or distributed computing environment. It utilizes communication channels, the pathways that connect the different parts of the computer environment, to exchange information such as instructions, status updates, or results. Message passing is instrumental in settings where multiple program components must collaborate, especially when running simultaneously or on different computers. It allows the processes to communicate and coordinate activities without sharing memory or other common data structures.
See also: message switching, real-time communications
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