A Wide Area Network (WAN) is a type of computer network that spans a large geographical area, such as a city, country, or even multiple countries. It typically connects multiple Local Area Networks (LANs) and other networks together, allowing devices and users in different locations to communicate and share resources over long distances.
WANs can be established using various technologies, such as leased lines, fiber optic cables, or satellite links, and are commonly used by businesses, government agencies, and educational institutions to connect their remote offices and branches.