Software-defined wide area networking (SD-WAN) is an attractive technology for enterprises because it helps them connect various branch offices and data centers over large geographic distances. It also delivers excellent return on investment (ROI), economies of scale, and data center flexibility.
One big advantage of SD-WAN is that it doesn’t rely on proprietary hardware. This also makes it easier to deploy compared to an MPLS link that has to be provisioned and often requires a lengthy contract.
According to an IHS Markit survey from mid-2017, about 65 percent of enterprises queried had started SD-WAN lab trials or expected to do so by the end of 2017, and 47 percent were in product trials. About 32 percent of those surveyed said they already had live SD-WAN networks.
But to be truly characterized as an enterprise-grade SD-WAN, the solution must provide a few critical features such as multiple transport paths, centralized control and automation, and end-to-end security.
Security is often highlighted because the SD-WAN needs to handle a lot of different traffic including the public Internet. Enterprises often like to be able to apply segmentation across the WAN, which helps quarantine potential attacks and block them from the rest of the network.
This eBook looks at the growing interest in SD-WAN as well as some of the challenges end-users may encounter when migrating to an SD-WAN environment.
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