If you’re looking to design a Secure Access Service Edge (SASE) network, you’re likely aware of the transformative potential it holds for modern enterprises. SASE represents a convergence of networking and security functionalities into a cloud-native architecture, offering improved performance, enhanced security, and simplified management. Further, SASE network design can improve the end user experience by enabling lowest latency routing to cloud resources using Tier 1 ISPs. In this article, we’ll review the essential keys to crafting an effective SASE network design that aligns with your organizational goals and objectives.
Introduction to SASE Network Design
What is SASE?
SASE, pronounced as “sassy,” stands for Secure Access Service Edge. It is a comprehensive framework coined by Gartner that combines wide-area networking (WAN) capabilities with network security services, all delivered as a cloud-native service. SASE aims to address the evolving needs of modern enterprises, particularly those transitioning to cloud-based infrastructures and embracing digital transformation initiatives. If you are seeking effective cloud connect solutions, please click HERE.
Importance of SASE Network Design
The design of a SASE network is paramount as it lays the foundation for the overall efficacy and performance of the architecture. A well-thought-out design ensures seamless integration of networking and security functionalities, optimizes resource utilization, and enhances user experience. Additionally, a robust SASE design enables organizations to adapt to dynamic business requirements, scale efficiently, and mitigate security risks effectively. Obviously, the application layer will perform best when the network transport (internet circuits) metrics are optimized for your global site distribution. We highly recommend that you leverage Tier 1 ISPs and have a detailed understanding of the reachability between your most critical destinations. This Guide will help with global Tier 1 ISP selection.
Security in SASE Network Design
Integration of Security in Network Design
One of the primary tenets of SASE is the integration of security into the fabric of the network. Unlike traditional approaches where security functions are deployed as standalone appliances at various network points, SASE leverages cloud-native security services delivered directly from the cloud. This integration ensures consistent and comprehensive security across all network edges, including branch offices, remote users, and IoT devices. See our article on network microsegmentation for an overview of this important strategy which may enhance security on your network.
Zero-Trust Principles in SASE
SASE embraces the zero-trust security model, which assumes that threats could originate from within the network as well as outside. Zero-trust principles dictate that every user, device, or application attempting to access the network must be verified and authenticated, irrespective of their location or trust level. By adopting a zero-trust approach, SASE networks minimize the risk of unauthorized access and lateral movement of threats.
Networking Components in SASE Design
SD-WAN in SASE
Software-defined wide-area networking (SD-WAN) is a foundational component of SASE architecture. SD-WAN technology enables organizations to leverage multiple network connections, including MPLS, broadband, and LTE, to optimize traffic routing and ensure reliable connectivity. In the context of SASE, SD-WAN acts as the transport layer that securely connects users to applications, regardless of their location.
Edge Computing and Its Role
Edge computing plays a pivotal role in SASE by decentralizing data processing and analysis closer to the source of data generation. By deploying computing resources at the network edge, SASE architectures reduce latency, enhance application performance, and support real-time decision-making. Edge computing also facilitates the implementation of security controls closer to the users, thereby improving threat detection and response times.
Scalability Considerations in SASE Design
Scalability is a key consideration in SASE design, particularly for organizations experiencing rapid growth or fluctuations in network traffic. A scalable SASE architecture should be able to accommodate increasing workloads, additional users, and new applications without compromising performance or security. Cloud-native SASE solutions offer inherent scalability, allowing organizations to dynamically adjust resources based on demand.
Adaptability to Changing Network Demands
Flexibility is another crucial aspect of SASE design, especially in today’s dynamic business environment. A flexible SASE architecture should be able to adapt to evolving network demands, technological advancements, and organizational requirements. By decoupling networking and security functionalities from physical infrastructure, SASE enables organizations to embrace change and innovation without being constrained by legacy systems. Macronet Services can help design and source the core network for High Availability including customer edge and provider edge diversity to ensure that your priority sites are up and running.
Prioritizing User Experience in SASE
User experience (UX) is at the forefront of SASE design, considering the distributed nature of modern workforces and the increasing reliance on cloud-based applications. A well-designed SASE architecture should prioritize seamless connectivity, low latency, and consistent performance to ensure optimal user experience. By optimizing traffic routing and leveraging application-aware policies, SASE enhances productivity and satisfaction among end-users.
Performance Optimization
Performance optimization is inherent in SASE design, driven by the need to deliver applications and services efficiently across distributed environments. SASE architectures leverage techniques such as traffic steering, WAN optimization, and content caching to maximize throughput and minimize latency. By intelligently routing traffic based on application characteristics and user requirements, SASE enhances overall network performance and responsiveness.
Cost Efficiency in SASE Design
Cost-Saving Benefits of SASE
Cost efficiency is a significant advantage of SASE compared to traditional networking and security approaches. By consolidating networking and security functions into a unified cloud-based platform, SASE eliminates the need for costly hardware appliances, maintenance overheads, and manual configurations. Additionally, SASE enables organizations to leverage pay-as-you-go pricing models, reducing upfront capital expenditures, and aligning costs with usage. Consider using a TEM provider to audit your network prior to embarking on a transformation so that you can accurately track ROI and ensure a clean disconnect of legacy services.
ROI Considerations
When evaluating SASE deployment, organizations should consider the return on investment (ROI) in terms of both tangible cost savings and intangible benefits. Tangible benefits may include reduced hardware expenses, operational efficiencies, and savings on network bandwidth. Intangible benefits, such as improved security posture, enhanced productivity, and business agility, also contribute to the overall ROI of SASE adoption.
Integration and Management of SASE
Integration of SASE with Existing Infrastructure
Integration with existing infrastructure is a critical aspect of SASE deployment, especially for organizations with heterogeneous environments and legacy systems. SASE solutions should seamlessly integrate with existing networking, security, and management tools to ensure interoperability and minimize disruptions. API-driven integrations and standardized protocols facilitate the orchestration and automation of SASE components within the broader IT ecosystem.
Centralized Management and Orchestration
Centralized management and orchestration simplify the administration and monitoring of SASE architectures across distributed environments. A unified management console provides visibility into network traffic, security events, and performance metrics, enabling administrators to enforce policies, troubleshoot issues, and streamline operations effectively. Automation capabilities further enhance efficiency by automating routine tasks and responses to security incidents.
Compliance and Regulatory Considerations For SASE
Meeting Compliance Requirements in SASE Design
Compliance with regulatory mandates and industry standards is a top priority for organizations deploying SASE architectures, particularly in highly regulated sectors such as healthcare, finance, and government. SASE solutions should support compliance frameworks such as GDPR, HIPAA, PCI DSS, and NIST, ensuring adherence to data protection, privacy, and security requirements. Built-in security controls and auditing capabilities help organizations demonstrate compliance and mitigate legal risks.
Addressing Regulatory Concerns
In addition to compliance requirements, SASE design should address specific regulatory concerns related to data sovereignty, jurisdictional regulations, and cross-border data transfers. Organizations must ensure that data processed and transmitted through SASE networks comply with local laws and regulations governing data residency, privacy, and encryption. Data localization, encryption protocols, and contractual agreements with service providers help mitigate regulatory risks and maintain compliance.
Risk Mitigation Strategies For SASE
Proactive Risk Mitigation in SASE Design
Risk mitigation is a fundamental aspect of SASE design, considering the evolving threat landscape and the potential impact of security breaches on business operations. SASE architectures employ a multi-layered approach to risk mitigation, incorporating preventive, detective, and responsive controls to mitigate threats at various stages of the attack lifecycle. Continuous monitoring, threat intelligence integration, and incident response planning enhance the resilience of SASE networks against cyber threats.
Disaster Recovery and Business Continuity
Disaster recovery and business continuity planning are integral components of SASE design, ensuring resilience and availability in the face of disruptions. SASE architectures leverage distributed infrastructure, redundant connectivity, and failover mechanisms to minimize downtime and data loss in the event of network outages or security incidents. Automated failover, data replication, and recovery point objectives (RPOs) help organizations recover quickly and resume normal operations with minimal impact.
Implementation Best Practices For SASE
Step-by-Step Guide to Implementing SASE
Implementing a SASE architecture requires careful planning, coordination, and execution to ensure successful deployment and adoption. Key steps in the implementation process include assessing current network infrastructure, defining security policies and user profiles, selecting appropriate SASE vendors, and conducting pilot testing before full-scale deployment. Collaboration between IT teams, security experts, and business stakeholders is essential for a smooth transition to SASE.
Common Challenges and How to Overcome Them
While implementing SASE offers numerous benefits, organizations may encounter challenges related to legacy systems integration, skill gaps, and cultural resistance to change. Addressing these challenges requires a combination of technical expertise, organizational alignment, and effective change management strategies. Training and upskilling employees, fostering a culture of innovation, and partnering with experienced SASE providers can help overcome obstacles and accelerate the adoption of SASE.
Case Studies
Real-World Examples of Successful SASE Implementations
To illustrate the effectiveness of SASE in addressing diverse business needs and challenges, let’s examine some real-world case studies of organizations that have successfully implemented SASE architectures.
- SASE Client X: A multinational corporation with a distributed workforce and multiple branch offices adopted SASE to streamline network connectivity, enhance security, and improve application performance. By leveraging SD-WAN, cloud-based security services, and centralized management, Client X achieved significant cost savings, increased agility, and strengthened its security posture. Further, the architecture enabled Client X to roll out a new global MultiCaaS solution that blended collaboration tools and contact center features for employees around the world, driving substantial improvements in their customer’s journey.
- SASE Client Y: A healthcare provider faced compliance challenges and security risks associated with remote patient care and telemedicine. By deploying SASE solutions tailored to the healthcare industry, Client Y ensured compliance with HIPAA regulations, protected patient data, and mitigated cyber threats effectively. The seamless integration of networking and security functionalities enabled Client Y to deliver reliable healthcare services while maintaining data privacy and confidentiality.
SASE Lessons Learned
The case studies highlight the transformative impact of SASE on organizations across various sectors, underscoring the importance of strategic planning, collaboration, and continuous innovation in SASE deployment. Key lessons learned from these implementations include the need for comprehensive risk assessment, stakeholder engagement, ongoing monitoring and optimization, and alignment with business objectives.
Future Trends in SASE
Emerging Trends in SASE Network Design
Emerging trends that have are gaining velocity are shaping the future of SASE network design and deployment:
- AI-Powered Security: Integration of artificial intelligence (AI) and machine learning (ML) technologies to enhance threat detection, automate security operations, and improve incident response capabilities.
- Edge-to-Cloud Convergence: Convergence of edge computing and cloud-native architectures to support distributed workloads, real-time analytics, and low-latency applications.
- Containerization and Microservices: Adoption of container-based architectures and microservices for modular, scalable, and agile SASE deployments.
- Zero-Trust Networking: Continued emphasis on zero-trust networking principles to minimize the attack surface, enforce least privilege access controls, and protect sensitive data.
Training and Skill Development For SASE
Importance of Training for SASE Deployment
As organizations embrace SASE to modernize their network and security infrastructure, investing in training and skill development becomes imperative. SASE deployment requires a multidisciplinary approach, involving expertise in networking, security, cloud computing, and software-defined technologies. Training programs, certifications, and hands-on workshops empower IT professionals to acquire the knowledge and skills needed to design, deploy, and manage SASE architectures effectively.
Skillsets Required for SASE Engineers
SASE engineers should possess a diverse skill set encompassing:
- Network Architecture: Understanding of networking principles, protocols, and architectures, including SD-WAN, MPLS, VPNs, and routing protocols. Macronet Services has a very deep bench of experts and other partnerships with extensive global WAN experience.
- Security Fundamentals: Knowledge of cybersecurity concepts, threat landscape, risk assessment methodologies, and security controls, with proficiency in encryption, authentication, and access management.
- Cloud Computing: Familiarity with cloud platforms, services, and deployment models, including public, private, and hybrid clouds, as well as containerization technologies such as Kubernetes. Its critical to understand how to connect to cloud resources including multi-cloud environments (i.e. Azure and Oracle Cloud Infrastructure OCI)
- Software-Defined Technologies: Expertise in software-defined networking (SDN), virtualization, orchestration, and automation tools for dynamic provisioning and management of network resources.
Vendor Selection and Partnerships For SASE
Criteria for Selecting SASE Vendors
When selecting SASE vendors, organizations should consider the following criteria:
- Security Capabilities: Comprehensive security features, including threat detection, encryption, data loss prevention (DLP), and compliance enforcement.
- Performance and Scalability: High throughput, low latency, and scalability to accommodate growing workloads and network traffic.
- Ease of Deployment and Management: Intuitive user interface, centralized management console, and automation capabilities to streamline deployment and operations.
- Interoperability and Integration: Compatibility with existing infrastructure, APIs for seamless integration with third-party tools, and support for industry standards.
- Vendor Reputation and Support: Track record of reliability, customer satisfaction, and responsiveness to support inquiries and service requests.
Importance of Strategic Partnerships in SASE
Forming strategic partnerships with SASE vendors, system integrators, and managed service providers can enhance the success of SASE deployment. Partnerships offer access to specialized expertise, extended support services, and value-added solutions tailored to specific business requirements. Collaborating with trusted partners enables organizations to accelerate implementation, optimize performance, and maximize the return on investment in SASE technologies. The team at Macronet Services has a vast network of resources and industry leading solutions engineering talent who can bring forward solutions in any phase from initial discovery and design to implementation, governance, FinOps and ongoing cost optimization.
Conclusion
Designing a SASE network requires careful consideration of various factors, including security, networking, scalability, user experience, cost efficiency, compliance, risk mitigation, and integration. By adopting a holistic approach and leveraging best practices, organizations can build resilient, agile, and future-proof SASE architectures that empower digital transformation, enable remote work, and support business innovation. Please visit Macronet Services and see our resources page for useful tools like our Network Design Strategy Playbook and WAN RFP Template. Please contact us anytime for a discussion about your initiatives.
FAQs (Frequently Asked Questions)
- What is SASE, and how does it differ from traditional networking and security architectures? SASE stands for Secure Access Service Edge, representing a convergence of networking and security functionalities into a unified cloud-native platform. Unlike traditional approaches where networking and security are managed separately using hardware appliances, SASE integrates these functions into a single, scalable, and flexible architecture delivered as a service from the cloud.
- What are the key components of a SASE architecture? Key components of a SASE architecture include software-defined wide-area networking (SD-WAN), cloud-based security services, edge computing resources, centralized management and orchestration, and zero-trust security principles. These components work together to provide secure, high-performance access to applications and data from any location or device.
- How does SASE enhance security compared to traditional approaches? SASE enhances security by adopting a zero-trust security model, where every user, device, or application attempting to access the network is authenticated and verified. By integrating security controls directly into the network fabric and leveraging cloud-native security services, SASE ensures consistent protection against threats across all network edges, including branch offices, remote users, and IoT devices.
- What are the cost-saving benefits of deploying a SASE architecture? Deploying a SASE architecture offers several cost-saving benefits, including reduced hardware expenses, operational efficiencies, and pay-as-you-go pricing models. By consolidating networking and security functions into a unified platform delivered from the cloud, organizations can eliminate the need for costly hardware appliances, maintenance overheads, and manual configurations, resulting in significant cost savings over time.
- How can organizations ensure compliance and regulatory adherence when deploying SASE? Organizations can ensure compliance and regulatory adherence when deploying SASE by selecting solutions that support industry standards and regulatory frameworks, such as GDPR, HIPAA, PCI DSS, and NIST. Additionally, organizations should implement robust security controls, encryption protocols, and auditing mechanisms to protect sensitive data and demonstrate compliance with legal and regulatory requirements.