SASE combines network security functions (such as SWG, CASB, FWaaS and ZTNA), with WAN capabilities (i.e., SDWAN) to support the dynamic secure access needs of organizations. Software architecture and implementation really matters. Be wary of vendors that propose to deliver services by linking a large number of features via VM service chaining. Favor SASE vendors that offer the simplicity of identity-/entity-based subscription licensing (not based on bandwidth) across all offerings.”]
Source: https://blogs.gartner.com/andrew-lerner/2019/12/23/say-hello-sase-secure-access-service-edge/