There is a good reason why software-defined networks are getting more attention. Simply, all business and consumer networking use cases are becoming “cloud-based” interactions that are themselves largely virtualized.
For enterprises and businesses, that tends to mean a shift towards virtual private networks supporting mobile, remote and distributed users who require access to cloud-based computing resources, no matter where they are working. That also implies a need for security and quality of service support provided by VPNs.
So a reasonable person might conclude that the shift in enterprise networking will be in the direction of software-defined networking (SD-WANs, VPNs, virtualized core networks, network slicing).