Companies have been implementing software-defined networking (SDN) in an effort to make their networks more responsive to cloud services that require flexibility to accommodate scaling traffic loads. Now CIOs hoping to shave dollars off of their costly networking bills are looking to extend SDN capabilities to their wide area networks (WANs).
WANs are telecommunications or computer networks that allow to relay data across remote offices. SDNs allow network administrators to use software to program tasks typically conducted by routers and switches and create policies to route services wherever they are needed regardless of the devices a server or other network device is connected to. SD-WANs marry both capabilities, enabling companies to rapidly set up and manage VPNs, WAN optimization, VoIP and network-based firewalls while supporting MPLS, broadband Internet and LTE services.
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SDNs come to the branch office, with risks
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