Routing is the process of determining the best path for data to travel across a network. When you send an email or browse the internet, your request is broken down into smaller packets of data. These packets are then directed through various devices, like routers, which analyze the destination and choose the most efficient route to deliver the information. In a larger context, routing is essential for connecting different networks, such as local area networks (LANs) and the internet. It ensures that data reaches its intended destination quickly and reliably, allowing for smooth communication between devices and users around the world.