Packet switching is a digital networking communications method that groups all transmitted data – regardless of content, type, or structure – into suitably-sized blocks, called packets. Packet switching features delivery of variable-bit-rate data streams over a shared network. When traversing network adapters, switches, routers and other network nodes, packets are buffered and queued, resulting in variable delay and throughput depending on the traffic load in the network.
UCLA's Leonard Kleinrock on packet switching, early Internet
Circuit Switching and Packet Switching
The Story of Packet Switching - Part 1
Lecture 19 Switching Techniques Packet Switching
Packet Switching by Khurram Tanvir
Lecture - 2 Qos in Packet Switching and ATM
Packet switching vs circuit switching
CompTIA Network+ N10-004: 2.5 - Packet Switched WAN Technologies