Packet-switched networks break data into smaller pieces called packets. Each packet travels independently through the network, taking the best available route to reach its destination. This method allows for efficient use of network resources, as multiple packets from different sources can share the same pathways. When packets arrive at their destination, they are reassembled into the original message. This approach contrasts with circuit-switched networks, where a dedicated communication path is established for the entire duration of a call. Examples of packet-switched networks include the Internet and IP networks.