Which service is included in a secure access service edge (SASE) solution, but not in...

The distinction between SASE (Secure Access Service Edge) and SSE (Security Service Edge) is a fundamental architectural concept in modern networking and security.

SASE Definition: SASE is a comprehensive framework that converges networking capabilities (specifically SD-WAN) with cloud-native security services (SSE) into a single, unified service model.

SSE Definition: SSE represents the security-focused subset of SASE.4 It encompasses the core security pillars required for secure access, including Secure Web Gateway (SWG), Cloud Access Security Broker (CASB), and Zero Trust Network Access (ZTNA).

The Key Differentiator: While both solutions share the same security stack (SWG, CASB, ZTNA), SD-WAN (Software-Defined Wide Area Network) is the specific networking component that exists in a full SASE solution to provide intelligent path selection and optimized connectivity. SSE intentionally excludes these wide-area networking functions, focusing purely on the security service delivery layer.

According to the FortiSASE 25 Enterprise Administrator Study Guide, organizations that already have a robust networking infrastructure and only require a cloud-delivered security overlay would opt for SSE, whereas those seeking a complete transformation of both network and security would deploy a full SASE solution that includes SD-WAN.