Three forces are coming together to fundamentally transform the WAN. First is the ability to easily leverage broadband Internet via software-defined WAN (SD-WAN) technologies. Second is the emergence of high-bandwidth wireless services, including Gigabit-class LTE and 5G. Third is the changing pricing model for wireless, from pay-per-bit to fixed-rate, fixed-bandwidth services.
Wireless can be a cost-effective, high-performance adjunct to SD-WAN, and one that enables use cases that were previously impossible or un-economical. In short, SD-WAN plus WWAN equals WAN transformation.