Challenger: Citrix Systems 

Desktop virtualization leader Citrix kept its spot in the Challenger quadrant with its flagship SD-WAN appliances that come in physical, virtual and cloud form factors and can be managed via the Citrix SD-WAN Orchestrator.

Fort Lauderdale, Fla.-based Citrix’s offering is cloud-managed and includes solid SD-WAN, application performance optimization, cloud features and security. However, Gartner noted that many enterprises don’t see Citrix as a network vendor, which could stand in the way of future growth. Citrix also has limited go-to-market channels, Gartner warned.