WAN (Wide Area Network) is a computer network with a Wide area and is a collection of many smaller networks such as LAN or MAN. WAN usually have use a satellite or cable under the sea for connecting each computer on the network. with the WAN you can contact other computers that were located very far only in a few minutes.
one example of a WAN is the Internet (Interconnecting Network) that connects many computers available throughout the world. so you can communicate quickly. with the WAN you can save time and cost. because in order to communicate you do not need to travel from your place.
Another example of the benefits of a WAN is a video telekonference. with video telekonference you can communicate face to face directly. and video telekonference also commonly used for meetings with members separated by distance.