In this 30-criterion evaluation of software-defined WAn (Sd-WAn) services providers, Forrester identified the 10 most significant ones — Aryaka networks, AT&T Business, colt Technology Services, GTT communications, Lumen (centuryLink), Masergy, Orange Business Services, Tata communications, verizon Business, and vodafone — and researched, analyzed, and scored them. This report shows how each provider measures up and helps infrastructure and operations (i&O) professionals select the right one for their needs.