The internet is a global network of computers that are connected to each other and communicate through a standardized set of protocols. It works by using a system of routers and switches to direct data packets from one computer to another. These data packets are broken down into smaller pieces, sent across the network, and then reassembled at their destination. The internet also relies on a system of domain names and IP addresses to identify and locate computers on the network. Overall, the internet is a complex and interconnected system that allows for the exchange of information and communication across the globe.