SASE: What Is Security Access Service Edge

SASE: What Is Security Access Service Edge
SASE: What Is Security Access Service Edge

As organizations constantly seek to enhance growth via the use of the cloud, more devices, data, applications, services, and users are used outside the organization’s environment, which implies that the company’s perimeter is no longer a location.

Despite the shift of an enterprise’s resources outside its perimeter, network architectures are still designed so that everything must go back and forth through a network perimeter.

SASE adoption has drastically increased as many businesses embrace remote working, and more companies seek to adopt its concept. So it has become essential that the study of SASE is thoroughly addressed.


What Is A Secure Access Service Edge?

As defined by Gartner, Secure Access Service Edge (SASE) is a security structure that formulates the transformation of security and network connectivity technologies to a unique cloud-delivered platform to authorize a secure and fast cloud transformation. It seeks to address the challenges of edge computing, digital business transformation, and workforce mobility.

SASE allows safe access from any location to branch offices and remote users, eliminating the need for security appliances or specialised hardware. You can think of Security Access Security Edge as an overlay to SD-WAN, which incorporates security protocols and increases a network’s reach, supporting devices with an inconsistent network connection.

The cloud-based IT technique combines software-defined networking with network security functions and supplies them from a unique service provider. Networks built with SASE are scalable, flexible, and connect globally distributed offices and employees across any location and device.

How Does SASE Work?

Secure Access Service Edge merges ubiquitous threat and data protection, network traffic, security priorities, and direct network-to-cloud connectivity. It allows corporate security professionals to employ identity and context to define the accurate level of performance, security, reliability, and cost desired for individual network sessions.

Organizations adopting the SASE framework would acknowledge an increased speed and achieve a greater scale in the cloud.

For instance, a sales force requires greater efficacy and efficiency through mobility. However, using public Wi-Fi to access the Internet can be risky. Hence, accessing corporate data and applications in a secure and timely manner poses a challenge.

The SASE model offers the platform to maintain greater access speed and performance while enabling more strict control of data, users, and devices traversing networks notwithstanding how, where, and when they’re doing it.

Importance Of SASE

The importance of the SASE architecture  can not be overemphasized; however, some of the benefits enterprises would for adopting the model includes;

A Centralized Management Of Security Policies

Central management of security policies narrows down remote employees’ security and networking aspects, regardless of where they are operating from. This means that the network perimeter exists at the endpoint whether security is systematically applied, with policies based on the activities of the connecting entity, on a network controlled by the company’s employees or not.

For instance, a salesperson receives a policy different from an IoT device, which is not the same with unmanaged devices like tablets and phones. This setup is perfect for managing the security of devices that are difficult to secure because of either their function, age, or vendor, such as medical devices.

Reduced WAN Costs

The routing component built-in SASE functions shares similarities with SD-WAN.

By eliminating the requirement for more expensive MPLS and leased connections, the WAN cost is dramatically lowered. In addition, cloud-based SASE implementations improve traffic flows by maximizing the benefit of cloud connectivity to major SaaS vendors.

Distributed Architecture

SASE depends on a distributed architecture with centralized management to build up its efficiencies; Centralized management is usually in a cloud instance while endpoints and branches connect to a cloud instance that offers the security system. As a result, network traffic flows are best routed to their destination.

SASE provides improved network latency characteristics instead of a VPN to an organization’s data center, where security has already been implemented.

Location Is Not An Issue

SASE doesn’t care about the locations of applications, whether in a corporate data center, a private or public cloud, or maybe a SaaS offering.. With SASE’s distributed architecture, it is easy to perform the security functions close to the end-user while easing connectivity to the applications.

Secure Cloud Data Access

SASE and CASB work together to supply cloud security and absolute network security services.

CASB-Cloud Access Security Broker is a security solution that manages the challenge of maintaining secure access to and for data stored while controlling a constantly shifting workload to the cloud.

Enterprise IT can attain data security, the proper level of visibility, threat protection, and compliance for its overall network.

Integrates SD-WAN Fully

SD-WAN has transformed the way enterprises connect to the cloud. With SD-WAN, a business can move away from closed, proprietary Wide Area Network solutions, which means they can gain flexibility and cost savings.


SASE remains the best model for attaining a direct-to-cloud framework that would not compromise on security control, visibility cost, complexity, and performance,

While it is important to realize that SASE frameworks can’t be executed in a day, note that the route to SASE requires urgency and speed, as Gartner has speculated that by 2024, not less than 40 % of organizations will have clear procedures to adopt Security access service edge from less than 1% as at the end of 2018.

By now, you can get started with the SASE model, and you can do so by visiting

Mark Funk
Mark Funk is an experienced information security specialist who works with enterprises to mature and improve their enterprise security programs. Previously, he worked as a security news reporter.