Network Switches are devices that control the flow of information through one’s network, allowing computers and other devices to connect to one another. The term “switch” comes from the fact that this is done through packet switching. Routers, meanwhile, are devices that join multiple networks together. They can filter and control traffic between networks, and can also be used to connect devices on the same network. What differentiates routers from switches is that they always connect to at least two networks, and are located at the point at which these networks connect.