As enterprise applications migrate from the corporate data centre to the cloud, network professionals are quickly realising that traditional Wide Area Networks were not architected for such dynamic, internet-based environments. In the quest for flawless access to business applications, many customers are now augmenting or even replacing legacy technologies such as MPLS with cheaper and better-performing, broadband-based, Software-defined WANs (SD-WAN).
An SD-WAN is a virtual WAN architecture that allows enterprises to leverage any combination of transport services – including MPLS, LTE and broadband internet services – to securely connect users to applications. SD-WAN uses a centralised control function to securely and intelligently direct traffic across the WAN. This increases application performance, resulting in enhanced user experience, increased business productivity and reduced costs for IT.