AT&T continues as the #1 U.S. Carrier Managed SD-WAN provider in 2021 for the fourth consecutive year, as per Vertical Systems Group’s annual SD-WAN Leaderboard.  Seven service providers each have 2% or more of the installed and billable Carrier Managed SD-WAN customer sites in the U.S. as of December 31, 2021. “The U.S. Managed SD-WAN … Continue reading AT&T tops VSG’s U.S. Carrier Managed SD-WAN Leaderboard for 4th year