Software-defined networks (SDNs) are gaining traction because of their usefulness in surmounting complexity and cost obstacles associated with hybrid networking and cloud computing.
To streamline disparate networks while getting the most out of pricey bandwidth, more businesses are turning to a type of SDN called SD WAN. Among its advantages, SD WAN allows businesses to control several network components and processes from a single interface or computer dashboard. SD WAN is hosted and based in the cloud, and is useful for businesses with branch offices and remote employees using a variety of networking methods.
Additionally, SD WANs can eliminate many manual operations and the need for expensive circuits to interconnect hybrid networks. At the same time, the technology makes it easier to maximize bandwidth in near-real time. This means that lower priority activity, such as web-surfing for noncritical work, can be sent through inexpensive public IP channels. More expensive circuits can be reserved for mission-critical and sensitive activity involving sales transactions and customer databases.
One way to think of SD WAN is to picture vehicles at an intersection on a divided highway. The network’s routing mechanisms are like the traffic lights. The drivers are going one way or the other, and taking turns based on the traffic signals. With SD WAN, instead of a traffic light that doesn’t respond immediately to changing conditions, you now have a sort of traffic-management genius in control. This highly trained professional uses advanced tools to evaluate traffic flow, vehicle occupancy and other qualitative factors to determine whether the light is red or green in a given direction. Like this pro traffic manager, SD WAN green-lights important, delay-sensitive payloads. Others get the red light, or are routed elsewhere. Everyone gets through the intersection efficiently and safely, relative to their situation and cargo.