This Momentum ebook explains SASE (Secure Access Service Edge), a Gartner-defined model (2019) that converges networking and security into one cloud-delivered, identity-aware platform so users can securely access applications from anywhere without relying on perimeter firewalls, MPLS backhauls, or broad-access VPNs. It describes why SASE is needed for cloud apps and hybrid work, replacing VPN with ZTNA for app-level access, and reducing tool sprawl by unifying controls like SD-WAN, SWG, CASB, DLP, and FWaaS plus centralized policy and analytics. It outlines how SASE works through global points of presence for inspection and routing, highlights benefits in performance, consistent security, simpler operations, and long-term cost efficiency, and contrasts SASE with legacy architectures, SD-WA

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