In today's hybrid work and multi-cloud environments, traditional network security approaches are becoming ineffective. Companies are seeking solutions that provide robust protection, high performance, and simplified management for distributed infrastructures. Secure Access Service Edge (SASE) offers an architectural approach that converges network and security functions into a single cloud platform, addressing these challenges.
Evolution of corporate networks and security challenges for distributed businesses
The decentralization of corporate networks, driven by hybrid work and multi-cloud environments, creates significant challenges for traditional perimeter security. Traditional perimeter security, based on centralized firewalls and VPN connections, is becoming ineffective. Users work from anywhere, using various devices, and applications are hosted both in corporate data centers and in numerous cloud environments. This decentralization blurs the traditional network perimeter, creating new vectors for cyberattacks and complicating consistent application of security policies. According to Statista, in 2023, 47% of companies in Europe used a hybrid work model 1, underscoring the relevance of these challenges. As a result, IT departments face increasing management complexity, rising operational costs, and reduced productivity for remote employees who are forced to route all traffic through the central office for security inspection.
What is SASE and how does it converge network and security?
Secure Access Service Edge (SASE) is an architectural approach that unifies network and security functions into a single cloud platform. Gartner defined SASE as the convergence of WAN capabilities (such as SD-WAN) and security functions (such as SWG, CASB, ZTNA, FWaaS) into a single, globally distributed cloud service 2.
Key SASE components include:
- SD-WAN (Software-Defined Wide Area Network): Optimizes traffic routing and ensures high connection performance for users, regardless of their location.
- SWG (Secure Web Gateway): Protects against web threats by filtering malicious traffic and providing access control to web resources.
- CASB (Cloud Access Security Broker): Secures cloud applications by controlling access and usage of SaaS services.
- ZTNA (Zero Trust Network Access): Grants access to corporate resources based on the 'zero trust' principle, verifying the identity of each user and device before granting access.
- FWaaS (Firewall-as-a-Service): Provides firewall functions as a cloud service, allowing security policies to be applied at the network level.
These components are integrated and delivered from a single cloud platform, allowing consistent security policies to be applied regardless of user or resource location.
Benefits of SASE for businesses: Simplification, security, performance
Implementing SASE offers significant advantages for companies aiming to optimize their IT infrastructure and enhance security in a distributed business environment:
- Simplified management: Instead of managing disparate network and security solutions, SASE offers a single console for centralized policy management and monitoring. This reduces operational complexity and IT staff workload, allowing them to focus on strategic tasks.
- Enhanced security: SASE ensures consistent application of security policies for all users and devices, regardless of their location. Zero Trust Network Access (ZTNA) principles guarantee that access is granted only after thorough verification, minimizing the risks of unauthorized access and lateral movement within the network. This is critical for protection against modern cyber threats such as ransomware and phishing.
- Improved performance: By optimizing traffic routing through the nearest SASE Points of Presence (PoP), users gain faster and more reliable access to cloud applications and corporate resources. This is especially important for remote employees, enhancing their productivity and improving user experience.
- Reduced TCO: Consolidating network and security functions into a single cloud service reduces costs associated with purchasing, deploying, and maintaining separate hardware and software solutions. The 'as-a-Service' model also provides flexibility in scaling, allowing payment only for necessary resources. Forrester research shows that companies implementing SASE solutions, such as Zscaler Zero Trust Exchange, achieved significant TCO reduction 3.
When to consider migrating to SASE: Key indicators for CIOs and CTOs
The decision to migrate to SASE is strategic and should be based on an assessment of current challenges and future business needs. Consider SASE if your organization faces the following indicators:
| Evaluation criterion | Signs indicating a need for SASE | Your current status | SASE recommendation |
|---|---|---|---|
| Complexity of network security management | Disparate solutions (VPN, firewalls, separate SD-WAN) increase operational complexity and IT staff workload. | High/Medium/Low | Consider/Evaluate/Not a priority |
| Frequency of security incidents | Frequent incidents related to remote access or cloud application usage indicate vulnerabilities. | High/Medium/Low | Consider/Evaluate/Not a priority |
| Performance of remote users | Low access speed to corporate resources or cloud services for remote employees. | High/Medium/Low | Consider/Evaluate/Not a priority |
| Operational costs for IT infrastructure | High costs for maintaining and licensing numerous network and security solutions. | High/Medium/Low | Consider/Evaluate/Not a priority |
| Plans for expanding hybrid work/multi-cloud environments | Significant expansion of the hybrid workforce or active transition to using multiple cloud platforms. | Yes/No | Consider/Not a priority |
| Need for consistent policy enforcement | Need to apply uniform security policies for all users and resources, regardless of their location. | Yes/No | Consider/Not a priority |
Choosing a SASE provider: What to look for
Selecting a SASE provider is a crucial step. It is important to consider the vendor’s architectural approach, integration capabilities, and alignment with your business needs. Leading players in the market include Palo Alto Networks, Fortinet, Zscaler, Cisco, Cato Networks, and Versa Networks, as confirmed by analytical reports such as the Gartner Magic Quadrant for SASE 4.
Some vendors offer a single platform (single-vendor), ensuring tight integration of all components and simplifying management. Others allow integration of solutions from multiple providers (multi-vendor capability), offering greater flexibility in choosing best-in-class components but potentially increasing integration complexity.
When evaluating, pay attention to:
- Feature completeness: Does the solution include all necessary SASE components (SD-WAN, SWG, CASB, ZTNA, FWaaS, DLP, IPS)?
- Global coverage: Presence of Points of Presence (PoPs) in regions where your employees operate to ensure low latency and high performance.
- Scalability: Ability to easily scale the solution to meet growing business needs.
- Integration: How well the SASE solution integrates with your existing infrastructure, identity systems (e.g., Active Directory), and SIEM systems.
- Licensing model: Clarity and flexibility of pricing that aligns with your budget and consumption model.
Comparative table of SASE solution approaches
| Criterion | Typical examples of single-vendor approach (e.g., Cato Networks, Zscaler) | Multi-vendor approach (integration of components from different providers) |
|---|---|---|
| Architectural approach | Unified, integrated platform from a single vendor. | Integration of best-in-class components from different vendors. |
| Key security functions | Tightly integrated SWG, CASB, ZTNA, FWaaS, DLP, IPS in a single console. | Ability to choose specialized solutions for SWG, CASB, ZTNA, FWaaS, DLP, IPS. |
| Network functions | Built-in SD-WAN with WAN optimization and routing. | Integration of SD-WAN from one vendor with security solutions from others. |
| Deployment flexibility | Predominantly Cloud-native, with support for hybrid scenarios. | High flexibility in deployment (Cloud-native, on-prem, hybrid) depending on selected components. |
| Scalability and global PoP coverage | Global network of PoPs ensuring scalability and low latency. | Depends on the coverage and scalability of each individual component. |
| Integration with existing infrastructure | Simplified integration due to a single platform (identity, SIEM). | May require additional effort to integrate different components and systems. |
| Licensing model and pricing | Typically based on number of users/bandwidth, simplified. | Can be more complex due to licensing from multiple vendors. |
| Support and service | Single point of contact for all issues. | Potentially multiple points of contact for different components. |
Pros and cons of SASE
| Pros of SASE | Cons of SASE and implementation challenges |
|---|---|
| Simplified management and consolidation of IT infrastructure. | Initial investment and complexity of migrating from existing systems. |
| Enhanced security through Zero Trust principles and integrated functions. | Vendor lock-in (for single-vendor solutions). |
| Improved performance for remote and cloud users. | Potential integration issues with a multi-vendor approach. |
| Reduced Total Cost of Ownership (TCO) in the long term 3. | Need for staff training and change management. |
| Flexibility and scalability to support growing business needs. | Lack of full functionality from some providers in early stages of development. |
SASE implementation roadmap: From planning to execution
Transitioning to SASE is a multi-stage process that requires careful planning and execution. The SASE implementation stages are based on recommendations from industry experts:
- Assess current infrastructure: Conduct a detailed audit of your existing network architecture, security solutions, user needs, and applications. Identify pain points and goals you aim to achieve with SASE.
- Define requirements and select a provider: Based on the assessment, formulate clear requirements for the SASE solution. Use the comparative table and selection criteria to evaluate potential providers.
- Pilot project: Deploy the SASE solution for a small group of users or branches. This will allow you to test functionality, evaluate performance, and identify potential issues before full-scale deployment.
- Phased implementation: After a successful pilot project, proceed with phased SASE deployment for the entire organization. This may include migrating remote offices, integrating cloud applications, and transitioning users.
- Training and change management: Provide training for IT staff and end-users on working with the new architecture. Effective change management is key to successful implementation.
- Monitoring and optimization: Continuously monitor the performance of the SASE solution, analyze security logs, and optimize policies to ensure maximum efficiency and protection.
Softline IT assists in planning and implementing solutions in the field of corporate networks: from auditing the current state to an agreed-upon change plan.
Softline IT helps teams plan and implement corporate network, from an assessment of the current environment to an agreed change plan.
