One of the hottest enterprise networking services is SD-WAN. In its first iteration, it was adopted by many enterprises for branch connectivity, especially where IP-MPLS leased line services were scarce or too expensive. It continued to evolve as enterprises embraced the cloud and SaaS. SD-WAN is increasingly used to connect public and hybrid cloud services to the enterprise network and support multi-edge computing and mobility. A crucial impact of SD-WAN is the changing needs for security in this more distributed, open relationship between the LAN, WAN, and cloud.
