What is SASE? A cloud service that marries SD-WAN with security

Secure access service edge (SASE) is a network architecture that rolls software-defined wide area networking (SD-WAN) and security into a cloud service that promises simplified WAN deployment, improved efficiency and security, and to provide appropriate bandwidth per application. Because it’s a cloud service, SASE (pronounced “sassy”) can be readily scaled […]

Secure access service edge (SASE) is a network architecture that rolls software-defined wide area networking (SD-WAN) and security into a cloud service that promises simplified WAN deployment, improved efficiency and security, and to provide appropriate bandwidth per application.

Because it’s a cloud service, SASE (pronounced “sassy”) can be readily scaled up and scaled down and billed based on usage. As a result, it can be an attractive option in a time of rapid change.

While some vendors in this space offer hardware devices to connect at-home employees and corporate data centers to their SASE networks, most vendors handle the connections through software clients or virtual appliances.

Gartner created the term SASE and first described it in a 2019 white paper that lays out its goals and what a SASE implementation should look like. The consulting firm notes that SASE is still developing and that all of its features may not be readily available yet.

Let’s take a closer look.

What is SASE?

Simply put, SASE combines SD-WAN capabilities with security and delivers them as a service. Security policies enforced on user sessions are tailored to each based on four factors:

Copyright © 2020 IDG Communications, Inc.

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