This concept is the equivalent, for a platform business, of a long-established computer networking idea known as the end-to-end principle. Originally formulated in 1981 by J. H. Saltzer, D. P. Reed, and D. D. Clark, the end-to-end principle states that, in a general-purpose network, application-specific functions ought to reside in the end hosts of a network rather than in intermediary nodes.6 In other words, activities that are not central to the workings of the network but valuable only to particular users should be located at the edges of the network rather than at its heart.