What Can SD-WAN Do For You?

SD-WAN is a fast-evolving network technology developed to allow organisations to fully exploit the advantages of SaaS / Cloud services, low cost connectivity options, flexible/rapid deployment and improved user experience while addressing the ever-evolving challenges of Information Security and Governance.


As SD-WAN is application aware, it can apply granular control, security and reporting on a per-application-flow basis, ensuring improved user experience, governance and service visibility. It also permits a greater level of automation, reducing the amount of manual change and management.

Powerful analytical and reporting tools measure and determine performance baseline metrics for each application, allowing the business to set and report against a per application SLA. Voice and video applications often take priority due to real-time communications requirements, but others that serve specific business objectives may fall into the critical category. Supporting the case with metrics to demonstrate gain goes a long way toward validating modernized WAN architecture. Using control and data planes, SD-WAN solutions take advantage of branches with multiple points of connectivity to the internet or corporate WAN. It then decides which of these paths is most appropriate for a specific application. Data is transmitted over the optimal path to ensure performance and maximize availability.

By distinguishing applications and controlling multi-path environments, Secure SD-WAN provides dynamic application steering via packets or sessions to traverse available paths to the corporate WAN or multicloud environments.


There is also another driver that is less perceivable in Europe, the cost of private verse public (the Internet) connectivity. In UK the cost of Internet verse private connectivity is broadly equivalent across the range of connectivity options. However, this is not the case when traversing European Country’s borders or in other regions.


This is because of the cost of building the capability to provide MPLS and other private network solutions on a large scale are significant, and unlike fibre the cost is proportional to the available throughput. So as bandwidths increase private network costs are likely to rise as Internet costs are projected to fall.