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End-to-end refers to communication between source and destination nodes on a network system.


On the Internet, the end-to-end philosophy was that

the intelligence of the network was best placed at the edge of the network, i.e., in its end devices such as intelligent terminals and computers. The job of the underlying network was simply to move data from one end to the other end without understanding or modifying the data it was transmitting. The idea was that the network would then be able to pass any kind of data the users chose to send instead of constraining the network to carry only certain kinds of traffic.[1]


  1. Leonard Kleinrock, "The Internet Rules of Engagement: Then and Now" (full-text).