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What is SASE?

The Convergence of Network and Security Functions Delivered as a Service

SASE, Defined

Secure Access Service Edge (SASE, pronounced “sassy”) combines comprehensive network capabilities with network-related security functions (such as Firewall NG, Secure Web Gateway, CASB and ZTNA) to support the dynamic, secure access needs of digital enterprises. It is provided as a service to ensure consistent and effective central policy management as well as the means to rapidly react to business changes.

In simple terms, SASE is the future of cybersecurity, combining network security and network needs (i.e. connecting to the company’s network) in a cloud-based service without compromising on the offered security of having security and networks tied to a physical location.

ZTNA control center


Secure Web Gateway (SWG)

SASE includes a SWG to provide secure internet access by filtering web traffic and blocking malicious content and threats.

Zero-Trust Network Access (ZTNA)

SASE incorporates a zero-trust security model that assumes no user or device can be trusted and requires continuous authentication and authorization checks to ensure only authorized users and devices can access resources.  Most importantly, implementation of ZTNA via a SASE platform elilminates the need, costs and complexity of VPN solutions.

Cloud Access Security Broker (CASB)

SASE uses a CASB to secure access to cloud-based applications and services by enforcing policies and monitoring usage.


SASE leverages Software Defined Networking to provide a virtualized network infrastructure that can be easily and quickly reconfigured to meet changing business needs.


SASE offers firewalls to provide network security by inspecting and filtering traffic at the network edge.

Why organizations need SASE

The advantages of SASE

  • Reduced Complexity - Tight integration of comprehensive wide area networking (WAN) and network security functions reduces the complexity and functional overlap that comes with implementing multiple specialized cybersecurity systems.
  • A Single, Solid Solution - A unified network and security platform enables flexible architecture as functionalities can be dynamically activated when needed.
  • Reduced Costs - Having a single cybersecurity solution helps reduce inevitable extra costs that come from having to pay for multiple cybersecurity systems that generally overlap in some functionality or another.
  • Increased Productivity - Delivery of SASE as a service reduces operational overhead and IT overhaul, helping the company focus on its goals without having to worry about security.
  • Better User Experience - Ubiquitous, well-peered cloud services complemented by branch edge devices provide holistic visibility and greatly reduce end-to-end network latency for an improved end-user experience
  • Increased Control - Real-time, context-based policy capabilities help improve policy accuracy and efficacy and result in a better infrastructure control
  • Better Data Protection - A cloud-based SASE solution reduces the risk of data breach to help companies rest assured that their data will not be abused or leaked.

How Does SASE Help?

SASE integrates networking and security functions tightly on one cloud-native platform. This approach allows companies to bring network and security functionality as close to the user as a cloud-based service which relieves a number of problems: flexible edge functionality activation to match today’s business agility requirements and increased performance by eliminating the need to backhaul network traffic through a gauntlet of network security devices in the data center miles away.

A modern control room with large screen displays showcasing global data and analytics. Two people are seated at desks with computers, monitoring the information. The room has a futuristic and high-tech ambiance, accentuated by reflections, glass panels, and an SD-WAN backbone enhancing efficiency.

Open Systems SASE Experience

Backed by the Open Systems Service Experience Promise, Open Systems simply and cost-effectively connects and secures hybrid environments and thus ensures your organization can meet business objectives.

Open Systems uniquely focuses on a superior user experience when helping organizations reduce risk, improve efficiency, and accelerate innovation.

The Open Systems SASE Experience delivers on the promise of Zero Trust with a comprehensive, unified and easy-to-implement and use SASE platform.  That platform is a single vendor SASE solution that combines our SD-WAN and Security Service Edge platform with service delivery by our Mission Control Experience Delivery team. Mission Control provides 24×7 operational management and engineering support and ensures affordable and predictable costs.

And it is all backed by our Service Experience Promise.

A technician wearing a headset connects yellow cables in a server room, working diligently for a leading SASE vendor. Behind him, a clock with multiple time zones displays the current times in San Francisco, New York, Zurich, Tokyo, and Sydney. Server racks with various colored cables are visible.


Connect users, machines, apps, and data in a high performance and reliable way – from anywhere to anywhere.

A man with a beard and short hair, wearing a navy blue shirt, stands facing a glass door with a smile, placing both hands on a rectangular touchpad on the door. His reflection can be seen in the glass. The background appears to be an office environment of an SD-WAN backbone provider.


Protect users, apps, and data from web threats as well as malicious access and misuse.

Two people sit at desks in a modern control room with multiple computer monitors. A large screen on the wall displays a 3D globe surrounded by data and statistics. The room has a glass wall, reflecting the interior and providing an open, transparent feel—ideal for monitoring via the SD-WAN backbone.


Experience unrivaled service, a multi-functional customer portal, 24×7 expert-level operations, and continuous technical consulting.

Leave Complexity

To learn how Open Systems SASE Experience can benefit your organization, talk to a specialist today.

Contact Us