A technology function describes the internal behavior of a node; for the user of a node that performs a technology function, this function is invisible. If its behavior is exposed externally, this is done through one or more technology services. A technology function abstracts from the way it is implemented. Only the necessary behavior is specified.
A technology function may realize technology services. Technology services of other technology functions may serve technology functions. A technology function may access technology objects. A node may be assigned to a technology function (which means that the node performs the technology function). The name of a technology function should preferably be a verb ending with “ing”.