Overview: Secure Access Service Edge (SASE)

Quick Definition

A Secure Access Service Edge (SASE) is a cloud-based security framework that combines network security and wide area networking capabilities into a single service. SASE integrates multiple security functions—including secure web gateways, cloud access security brokers, firewall-as-a-service, and zero trust network access—with software-defined wide area network (SD-WAN) capabilities to provide comprehensive security for distributed workforces and cloud-first organizations.

The SASE model addresses the limitations of traditional network security architectures that were designed for centralized, perimeter-based environments. As organizations increasingly adopt cloud services and remote work models, the conventional approach of backhauling all traffic through a central data center becomes inefficient and creates security gaps. SASE solves this by delivering security services from the cloud edge, closer to users and applications.

Key benefits of SASE include simplified management through a single security stack, reduced latency by processing traffic closer to end users, and improved scalability for organizations with dynamic network needs. The framework also supports zero trust principles by continuously verifying user identity and device security before granting access to resources, regardless of location.