ThousandEyes is part of Cisco   Learn More →
Webinar
Best Practices for Assuring SD-WAN Performance

Learning Center

What is a Software-Defined Wide Area Network?

What is SD WAN?

Software-Defined Wide Area Network (SD-WAN) is a specific application of Software-Defined Networking (SDN) technology applied to Hybrid WANs.

In a Hybrid WAN, routing policy controls are implemented and managed on a router by router basis. In a SD-WAN, a centralized SD-WAN controller service has control of all routing policies. As a branch of Hybrid WAN, SD-WAN routing policies are primarily utilized to manage which application traffic should traverse multiple types of transport, including MPLS, Internet VPN and Direct Internet Access (DIA) links.

Subscribe to the ThousandEyes Blog

Stay connected with blog updates and outage reports delivered while they're still fresh.

Upgrade your browser to view our website properly.

Please download the latest version of Chrome, Firefox or Microsoft Edge.

More detail