SD-WAN Deep Dive

1. Article 01 of 11FREE

   SD-WAN: How It Works and When It Fits

   SD-WAN applies software-defined policy to wide-area network traffic, helping teams manage multiple links and application paths centrally. Its value depends on the underlay, security design, and operating model around it.

2. Article 02 of 11FREE

   Why Consider SD-WAN? Ten Reasons to Evaluate Your WAN

   SD-WAN is worth evaluating when multi-site traffic, cloud access, or network operations are difficult to manage with the current WAN. The benefits depend on the links, policies, security controls, and operating model.

3. Article 03 of 11FREE

   MPLS vs SD-WAN: How to Choose for a Multi-Site Network

   MPLS and SD-WAN are not mutually exclusive. Compare the service commitments and traffic needs at each site, then decide whether MPLS, SD-WAN, or a hybrid design fits the requirement.

4. Article 04 of 11FREE

   SD-WAN Architecture: Components, Planes, and Topologies

   An SD-WAN architecture connects edge devices over underlay networks and applies centrally managed policy to traffic. Component names and control placement vary, so assess the functions and paths rather than assuming one reference design.

5. Article 05 of 11FREE

   How to Design an Enterprise SD-WAN

   Design an SD-WAN around the applications, sites, traffic paths, failure needs, security controls, and operating responsibilities it must support. Select topology and policy only after those requirements are understood.

6. Article 06 of 11FREE

   SD-WAN Security: Controls, Responsibilities, and SASE Boundaries

   SD-WAN can support security controls such as encrypted tunnels, segmentation, and traffic inspection, but available features and enforcement points vary. Define the required controls and owners on every path; an SD-WAN label is not a complete security architecture.

7. Article 07 of 11FREE

   SD-WAN Deployment: Risks, Sequencing, and Mitigation

   A reliable SD-WAN rollout starts with a clear baseline and bounded pilot. Map application paths and dependencies, test policy and failure behaviour, and keep rollback criteria explicit before expanding site by site.

8. Article 08 of 11FREE

   Measuring SD-WAN Success: A Practical Framework for Outcomes

   Measure SD-WAN against the outcomes it was meant to improve. Set a baseline, define the calculation and data source, then compare like-for-like periods while accounting for application, staffing, and contract changes.

9. Article 09 of 11FREE

   SD-WAN Total Cost of Ownership: Comparing Value with a Legacy WAN

   SD-WAN does not guarantee lower WAN costs. A defensible comparison includes recurring services and one-time transition costs, states its assumptions, and distinguishes realised savings from cost avoidance and expected benefits.

10. Article 10 of 11FREE

    Cloud-Delivered SD-WAN: Service Models and Architecture Trade-offs

    Cloud-delivered SD-WAN describes where some management or network functions are hosted, not a guarantee that every branch appliance disappears. Compare the control plane, traffic path, edge placement, dependencies, and operating responsibilities in the actual service.

11. Article 11 of 11FREE

    AI in SD-WAN: Useful Capabilities, Limits, and Evaluation Questions

    AI in SD-WAN is not one feature or an assurance of autonomous networking. Ask what data a capability uses, what decision it makes, whether it can act, how operators can inspect or reverse that action, and what evidence shows it works for your network.

Browse all topics in Network & Security.