A WAN is a network that covers a broad geographic area, connecting multiple LANs. The internet itself is the largest WAN.
Why it matters:
- Essential for connecting offices across cities, states, or countries.
- Typically relies on leased lines, VPNs, or MPLS for secure communication.
- Allows distributed organizations to function as one.
Pro tip: WANs usually have higher latency than LANs due to distance and traffic — plan applications accordingly.
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