Wide Area Network (WAN) technologies connect offices, data centres, cloud services, and remote users across long distances. The best WAN design balances performance, reliability, security, cost, and the needs of each location.
Common WAN Options
- Dedicated links: predictable performance for critical sites.
- MPLS: a managed private-network option used by many organisations.
- Internet VPN: encrypted connectivity over public internet links.
- Broadband and cellular: flexible primary or backup access for smaller and remote locations.
- SD-WAN: policy-based control across multiple connections.
Design Considerations
Assess bandwidth, latency, uptime requirements, application priorities, and backup paths. Critical traffic should be protected with quality-of-service policies and resilient connectivity.
Modern WAN Planning
Cloud applications and remote work make secure internet connectivity increasingly important. Review the network regularly as applications, sites, and security requirements change.
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