A connected network of autonomous warehouse systems.

SD-WAN

SD-WAN, or Software-Defined Wide Area Network, is a technology designed to streamline the management and operation of wide area networks. It provides enhanced efficiency and control over network traffic, ensuring optimal performance and connectivity.

What exactly is SD-WAN? How does it function, and what makes it so appealing to enterprises? Why does it integrate more effectively into modern network architectures compared to legacy alternatives?

SD-WAN Explained

At a high level, SD-WAN utilizes software to manage and control WAN connectivity. Gartner has identified four key characteristics of SD-WAN:

  • SD-WAN supports multiple transport methods such as MPLS (Multiprotocol Label Switching), 4G LTE, xDSL, etc.
  • SD-WAN supports dynamic path selection.
  • SD-WAN provides a simple management interface.
  • SD-WAN supports third-party services such as VPNs (Virtual Private Networks), firewalls, gateways, etc.

Although various approaches to SD-WAN exist, these characteristics are essential for understanding the core functionality expected across different vendors.

SASE

Secure Access Service Edge (SASE) provides integrated network and security services, including SD-WAN, SWG, CASB, NGFW, and zero trust network access (ZTNA). SASE is designed for various secure access scenarios such as branch offices, remote workers, and on-premises locations. Primarily offered as a service, SASE enables zero trust access by utilizing the identity of the device or entity along with real-time context and security and compliance policies.