Leader: Silver Peak Networks

Three-time leader Silver Peak has been ahead of the SD-WAN game because it hit the market ahead of other major SD-WAN vendors. As such, the vendor has strong depth and breadth of optimization features, including WAN optimization, SaaS acceleration and voice optimization, Gartner said. While the vendor has limited native security capabilities, Silver Peak today has partnerships with key security vendors, including Check Point Software Technologies, Fortinet, Palo Alto Networks and Zscaler.

Aruba Networks, an HPE company, announced its intent to acquire Santa Clara, Calif.-based Silver Peak in July and closed the $925 million deal in September.