Hypermedia (specifically the WWW)
 

Two major architectural components:

Nodes

contain information, which is presented through several media

Links

lead from visible elements in nodes to other nodes (or sometimes to other elements within the same node)

HCI view:

Navigation between pages

contributions from HCI, domain experts, technical communication

Information presentation

contributions from technical communication, domain experts, writing sciences, marketing, HCI, cinematic arts

Multimedia layout

contributions from visual arts, media arts, marketing, HCI