Secure Access Service Edge (SASE) is a cloud-based cybersecurity concept that combines network security functions with WAN capabilities to support the dynamic secure access needs of organizations. SASE integrates security services such as Zero Trust Network Access (ZTNA), Cloud Access Security Broker (CASB), Firewall as a Service (FWaaS), and Secure Web Gateway (SWG) with network services like SD-WAN. This convergence allows organizations to apply consistent security policies regardless of where users, applications, or devices are located. SASE is particularly relevant in today's distributed work environments, where traditional network perimeters are becoming obsolete. By moving security to the cloud edge, SASE enables more flexible, scalable, and comprehensive protection for modern, cloud-centric organizations.