Secure Access Service Edge

Secure Access Service Edge (SASE) is a cloud-native architecture that combines network security functions with wide area networking (WAN) capabilities. It delivers security services like firewall as a service and secure web gateway directly to users and devices, regardless of their location. SASE aims to simplify network management and enhance security for modern, distributed enterprises.

Understanding Secure Access Service Edge

SASE integrates various security tools such as Zero Trust Network Access (ZTNA), Cloud Access Security Broker (CASB), and Firewall as a Service (FWaaS) into a unified cloud platform. This approach allows organizations to secure access for remote workers, branch offices, and cloud applications more effectively than traditional perimeter-based security. For example, a company with employees working from home can use SASE to ensure all traffic is inspected and secured before reaching corporate resources, improving both performance and protection. It simplifies IT operations by consolidating multiple point solutions.

Implementing SASE shifts security responsibility from on-premises hardware to a cloud-based service model, requiring careful governance over policy enforcement and data protection. Organizations must define clear access rules and monitor usage to mitigate risks associated with distributed access. Strategically, SASE is crucial for supporting digital transformation and hybrid work environments, providing a scalable and agile security framework that adapts to evolving business needs and threat landscapes. It ensures consistent security policies across all users and devices.

How Secure Access Service Edge Processes Identity, Context, and Access Decisions

Secure Access Service Edge SASE converges networking and security functions into a single, cloud-delivered service model. It securely connects users, devices, and remote locations to applications and data wherever they reside. Key components include Software-Defined Wide Area Network SD-WAN, Firewall as a Service FWaaS, Secure Web Gateway SWG, Cloud Access Security Broker CASB, and Zero Trust Network Access ZTNA. Traffic is routed through a global network of SASE points of presence PoPs. Security policies are applied consistently at the network edge, close to the user. This approach reduces latency and improves performance while enforcing robust security measures, shifting the security perimeter from the data center to the user.

SASE solutions are typically managed through a centralized cloud console, offering consistent policy enforcement and visibility across the entire network. Updates and new features are delivered automatically by the SASE provider. Governance involves defining granular access rules and security postures based on user identity and device context. SASE integrates with existing identity providers and security information and event management SIEM systems. This ensures a unified security posture and streamlined operational management for organizations.

Places Secure Access Service Edge Is Commonly Used

SASE is widely adopted for modernizing network security and access, especially for distributed workforces and cloud-first strategies.

  • Securing remote workers accessing cloud applications and internal resources from any location.
  • Connecting branch offices securely to the internet and corporate applications without backhauling traffic.
  • Enforcing consistent security policies for users and devices across diverse network environments.
  • Protecting sensitive data and applications hosted in multiple public and private cloud environments.
  • Simplifying network and security infrastructure by consolidating multiple point solutions into one.

The Biggest Takeaways of Secure Access Service Edge

  • Evaluate SASE providers based on their global Points of Presence PoP footprint and integrated security capabilities.
  • Prioritize a phased SASE adoption, starting with critical remote access and branch office use cases.
  • Ensure your SASE solution integrates well with existing identity management and security tools.
  • Focus on policy consistency and centralized management to maximize SASE's operational benefits.

What We Often Get Wrong

SASE is just SD-WAN and security.

SASE is more than a simple combination. It is a converged, cloud-native architecture that integrates networking and security functions into a single, unified service. It delivers these capabilities from a global network edge, not just by linking separate products.

SASE is a single product to buy.

SASE is a framework or architectural model, not a single off-the-shelf product. Organizations typically implement SASE by adopting a platform from a vendor that offers a comprehensive suite of integrated networking and security services.

SASE replaces all existing security tools.

While SASE consolidates many functions, it often complements existing security investments. It integrates with identity providers, SIEM, and endpoint detection and response EDR solutions. The goal is to enhance, not necessarily eliminate, all current security tools.

On this page

Frequently Asked Questions

What is Secure Access Service Edge (SASE)?

Secure Access Service Edge (SASE) is a cloud-native architecture that combines wide area networking (WAN) and network security functions into a single, unified service. It delivers security capabilities like secure web gateways, cloud access security brokers, and firewalls as a service, along with networking functions like SD-WAN. SASE aims to provide secure and efficient access to applications and data for users, regardless of their location or device.

Why is SASE important for modern businesses?

SASE is crucial for modern businesses due to the shift to cloud applications and remote work. Traditional perimeter-based security models struggle to protect distributed users and data. SASE centralizes security and networking in the cloud, reducing complexity and improving performance. It ensures consistent security policies are applied everywhere, enhancing protection against evolving cyber threats and supporting business agility.

How does SASE improve security?

SASE improves security by integrating multiple security services into a single platform. This includes threat prevention, data loss prevention, and secure web gateways. It applies Zero Trust principles, verifying every user and device before granting access. By moving security closer to the user and the edge, SASE reduces latency and enhances real-time threat detection and response, protecting sensitive data across all environments.

What are the key components of a SASE architecture?

A SASE architecture typically includes several core components. These often feature Software-Defined Wide Area Network (SD-WAN) for optimized connectivity and various security services. Key security components include a Secure Web Gateway (SWG), Cloud Access Security Broker (CASB), Firewall as a Service (FWaaS), and Zero Trust Network Access (ZTNA). These elements are delivered as a unified, cloud-native service.