Unified SASE: The Third Era of Network Security

This article outlines the progression of network security from stateful firewalls to NGFW/UTM and now to Unified SASE, emphasizing the convergence of networking and security across hybrid workforces, distributed edges, and multi-cloud. It highlights components like Secure SD-WAN, SSE (SWG + CASB), ZTNA, DEM, and endpoint protections, and advocates for an AI-driven, integrated platform with a single OS, client, analytics, and policy engine. The piece critiques bolt-on solutions and argues that a unified architecture is essential for performance, visibility, control, and consistent data security.