What is WAN?

A Wide Area Network (WAN) is a telecommunications network that connects multiple smaller networks over long distances. WANs are used to link computers, devices, or networks from different locations. This enables them to communicate as if they were in the same place.

Unlike a Local Area Network (LAN), which connects devices that all comes from a single location, a WAN covers much larger geographical areas. These areas can range from cities to entire countries. WANs allow businesses, organisations, and individuals to share data and resources between remote sites.

The most common example of a WAN is the internet. It connects millions of networks across the globe, so users can access information from virtually anywhere. However, WANs can also be private, used by companies to link offices or data centres.

WANs typically rely on public infrastructure such as telephone lines, fibre-optic cables, or satellite links. This helps create connections between the separate LANs. Businesses often use WANs to enhance communication, streamline operations, and improve access to resources, regardless of their location.

There are several types of WAN technologies, including leased lines, MPLS (Multiprotocol Label Switching), and VPNs (Virtual Private Networks). Each has its own advantages and is chosen based on factors such as speed, security, and cost.

WANs are vital in today’s connected world. They support global commerce, communication, and access to information, making them an essential component of modern infrastructure.

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