Noun
packet switching (uncountable)
(networking) A means of directing digitally encoded information in a communication network from its source to its destination, in which messages may be divided into smaller entities called packets, each of which travels independently through the network in paths based on moment to moment routing decisions made by the nodes through which they pass.
Connectionless and connection-oriented modes Packet switching may be classified into connectionless packet switching, also known as datagram switching, and connection-oriented packet switching, also known as virtual circuit switching. Source: Internet
Packet switching increases network efficiency, robustness and enables technological convergence of many applications operating on the same network. Source: Internet