Secure Access Service Edge (SASE) is a modern network architecture that converges networking and security services into a single, cloud-native platform. Coined by Gartner in 2019, SASE (pronounced “sassy”) addresses the growing need to securely connect users, devices, and applications—no matter where they’re located—in an increasingly remote and cloud-centric world.

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Traditional security models rely on centralized data centers and perimeter-based defenses. But as users move off-premises and applications shift to the cloud, this model creates performance bottlenecks and visibility gaps. SASE solves this by delivering both security and connectivity functions at the network edge, closer to the user.

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A SASE framework typically includes:

• Software-defined WAN (SD-WAN) for optimized, resilient connectivity.
• Zero Trust Network Access (ZTNA) to replace traditional VPNs with identity-based, least-privilege access.
• Cloud Access Security Broker (CASB) to govern use of SaaS applications and prevent data leaks.
• Firewall as a Service (FWaaS) to deliver scalable, cloud-based traffic inspection.
• Secure Web Gateway (SWG) to filter and protect internet-bound traffic.

These components are unified under a single policy and management layer, enabling consistent security enforcement regardless of the user's location, device, or network.

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The benefits of SASE include:

• Improved performance by eliminating backhauling of traffic.
• Stronger security through integrated, cloud-delivered protection.
• Operational simplicity, reducing the need for multiple point products.
• Scalability and flexibility, ideal for distributed workforces and hybrid IT environments.

As organizations embrace hybrid work and digital transformation, SASE offers a strategic way to modernize both network infrastructure and security posture—replacing outdated models with agile, cloud-first protection that follows the user wherever they go.