Earthlink will soon be offering software-defined wide area network (SD-WAN) services to its customers. The ISP is teaming with VeloCloud to deliver network access, hosted voice, security, and other SD-WAN applications to Earthlink customers starting in the fall.

Earthlink has been eying the SD-WAN opportunity for awhile because it can use the technology to connect enterprise networks across large geographic distances. Plus, the SD-WAN gives customers more visibility and control over applications, websites, and devices.

Several service providers have been adding SD-WAN services to their portfolios for enterprise customers.

CenturyLink earlier this year began offering SD-WAN technology from Versa Networks to its business customers. The service provider sees managed SD-WAN as a big opportunity, initially, to serve large enterprises that have a lot of branch locations.

In addition, VeloCloud earlier this summer inked a deal with Deutsche Telekom to use SD-WAN between the United States and Germany and interconnect the operator’s Telekom Innovation Labs’ headquarters in Berlin with its Silicon Valley Innovation Center in Mountain View, California.

In its first report on the SD-WAN market, research firm IDC estimated that SD-WAN revenues worldwide will exceed $6 billion in 2020 with a compound annual growth rate of more than 90 percent between 2015 to 2020.

IDC noted in its report that SD-WAN is a relatively new market and that the technology leverages hybrid WAN architectures. IDC also said that in a recent survey of U.S. enterprises, nearly half are considering migrating to SD-WAN over the next two years.