Wide area networks (WANs) were not designed for the load that most enterprises need them to handle today. Demand for data across the distributed enterprise is growing exponentially; virtually all enterprises are using cloud technology in some form; and the Internet of Things is growing expanding the scope of networks far beyond servers, PCs, tablets and smartphones. So, it shouldnâ€™t be a surprise that many are eagerly turning to software-defined WANs (SD-WANs) to deal with those growing needs.
SD-WANs reflected the ongoing movement to software-defined IT assets and increasing reliance on virtualization to make those assets available where and when needed. But few organizations have the fortitudeâ€”or budgetâ€”to rip and replace core pieces of their existing infrastructure, such as MPLS, which provides Class of Service prioritization and Quality of Service management.
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