The document explains that SASE is a cloud-based approach that converges networking and security to support a world dominated by remote work, cloud apps, and distributed users. Evolving from SD-WAN, SASE reduces latency by connecting users directly to cloud resources while replacing fragmented security tools with an integrated model. It unifies secure web gateways, cloud access security brokers, firewall as a service, and zero trust network access into one platform. SASE delivers consistent performance, identity-driven security, and easier scalability, addressing challenges like decentralized data, hybrid work, VPN latency, and edge-based threats.

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