SD-WAN

Updated: Feb 26

A Software-defined Wide Area Network (SD-WAN) is a Secure-by-design Virtual Wide Area Network (WAN) architecture that allows enterprises to deploy any combination of data transactions to securely connect users to applications. In other words, a software-defined Wide Area Network (SD-WAN) is abstracted from its hardware, creating a virtualized network layer.


This IT Network type uses a centralized control function to securely direct traffic across the WAN. Business-critical applications are running over the Internet across multiple clouds, and traditional WANs that use conventional routers were not designed for the cloud. Contrarily, the SD-WAN model is designed to fully support applications hosted in on-premise data centers, SaaS services and clouds services.



Source: Silver-Peak


An SD-WAN can connect several branch locations or industrial manufacturing facilities to a central hub office, or cover multiple locations in a large facility/factory, and it has four main components:

  • WAN virtualization.

  • Edge connectivity abstraction.

  • Elastic traffic management.

  • Centralized management.

Several SD-WAN solutions are basic and lack reliability, performance and scalability, hence, they don't ensure a secure and smart network experience. Contrarily, Industry-driven SD-WANs provide:


Optimal application performance under any network condition through continuous monitoring and self-learning.

  • Full end-to-end and live orchestration of all WAN edge functions.

  • Automated daily application definition and IP address updates to adapt to changes in cloud applications.

  • Comprehensive end-to-end security capabilities and microsegmentation.

Learn more about SD-WAN in here.


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