Security is often the single biggest concern that CIOs and CISOs have when they are contemplating a new networking architecture. They want to be sure that moving from a traditional WAN architecture to one that is software-defined (SD-WAN) improves security, especially in an environment where they need the business agility to get remote sites up and running quickly.
An SD-WAN is a logical overlay network that encompasses any WAN transport – public, private, even LTE – and is independent of any particular carrier or service provider. The overlay occurs between any two SD-WAN nodes, called edges, which can be deployed at the branches and/or data centers. A cloud- delivered variation extends the overlay to any cloud Point-of-Presence (PoP) or data center.