https://www.sdxcentral.com/articles/news/att-tops-managed-sd-wan-ranking-centurylink-surges/2020/04/
Rankings are based on installed and billable carrier managed SD-WAN customer sites.
"While the duration and depth of the coronavirus economic collapse is unknown, we expect resiliency across bandwidth intensive VPN markets, but acute vulnerability for the SD-WAN networks supporting the retail and travel verticals."