Wide Area Network
Also known as: WAN
Definition
A WAN is a communications network that interconnects remote locations or systems over a broad geographic footprint using routed or carrier-provided transport.
Key Points
- It spans multiple sites and transport domains.
- It carries enterprise and operational traffic over distance.
- It depends on routing, segmentation, and service quality.
- It must tolerate latency, loss, and path diversity issues.
- It is a common substrate for remote operations and distributed systems.
Concept
A WAN is more than just distance. It is the combination of transport, routing, security, and service management that makes remote connectivity usable for real workloads. Because paths cross multiple administrative and physical domains, WAN design has to account for failure diversity, policy enforcement, and performance variation.
Explainer
Operational WANs carry mixed traffic: control data, telemetry, collaboration, and sometimes high-value media or command traffic. That makes segmentation and QoS critical. The network has to stay predictable enough for the application layer to behave, even when the underlying transport is not perfectly stable.
Cite this entry
Wide Area Network. ConnectedEarth Knowledge Base. https://connectedearth.space/knowledge-base/wide-area-network/ (updated 13 September 2026).