Secure Access Service Edge (SASE) is a cloud-based security architecture that converges software-defined wide area network (SD-WAN) with a consolidated cloud-delivered security stack that features SWG, CASB, ZTNA, and FWaaS. SASE is the future state of network security. A SASE architecture converges networking and security functions in the cloud to connect users to the applications and data they need, wherever it lives, from wherever they are.