This is also known as a Wide Area Network. It’s used to connect devices that are far from another. It’s quite common for a WAN set up to be far more complex than a LAN. Essentially, you start with a LAN and then use the WAN to connect multiple LAN networks to one another. Ultimately, this means that offices can be connected and this typically occurs through public networks.
If you want the greatest example of the WAN network system, just look at the internet. On the most basic level, this is a system that ensures that multiple networks can connect together. As such, it can be considered to be the largest WAN network in existence today.
LAN vs WAN Definitions
LAN stands for local area network. This allows for computers and devices that are close together to connect. They will then be able to share files or complete tasks and this usually means that they are using the same router or switch. Typically, this type of network will consist of everyday devices which could include a range of different business technology. Examples would be tablets, printers, and desktops. The network will also usually have routers and switches(you may be interested in Routers vs Switches vs Firewalls) as well as wireless cards or potentially ethernet cables. Be aware that a LAN is commonly set up in a home to allow easily family sharing.