What Is Managed SD-WAN?

How Managed SD-WAN Works

A managed SD-WAN architecture typically employs edge devices at branch sites and data centers to route traffic more intelligently. Instead of relying solely on multiprotocol label switching (MPLS) or a single network service, it leverages multiple transport methods, such as broadband internet and 4G/5G. This approach eases data bottlenecks by identifying the best path for each flow, optimizing performance across the wide area network.

In a managed arrangement, a service provider oversees the WAN management process, offloading the complexities of configuration, monitoring, and troubleshooting. This managed network arrangement ensures that organizations can rely on experts to track real-time analytics and respond quickly to any performance dips. Additionally, the managed service provider (MSP) handles updates, security policies, and compliance requirements, freeing internal teams to focus on strategic initiatives.

Cloud-based controllers offer a centralized management interface that orchestrates every site in the network infrastructure. By utilizing zero-touch provisioning and automated deployment, new locations come online faster and with fewer errors. Through this software-defined wide area approach, organizations benefit from consistent WAN connectivity, improved network visibility, and the ability to adapt swiftly to evolving operational demands.

Key Features of Managed SD-WAN

Although managed SD-WAN is best known for delivering high performance and reliability, it also comes with a wealth of other capabilities that enhance every facet of area SD-WAN. Chief among these are the following features:

• Centralized management: Granting a single-pane-of-glass view of all network connections and policies, making it simple to configure and monitor everything remotely.
• Multi-path connectivity and intelligent routing: Leveraging multiple links, from multiprotocol label switching (MPLS) connections to broadband lines, to dynamically direct traffic based on real-time conditions.
• Enhanced security: Incorporating encryption, segmentation, and built-in firewalls to safeguard data in transit and mitigate diverse cyberthreats.
• Scalability and flexibility: Supporting new branch office expansions, user growth, and changing bandwidth demands without overhauling core hardware.
• Performance optimization: Employing application-aware routers and path selection engines to deliver consistent experiences across distributed sites.
• Operational efficiency: Minimizing manual tasks and reducing overhead through automated workflows, analytics, and integrated troubleshooting tools.

Benefits of Managed SD-WAN

Adopting a managed SD-WAN solution produces enduring advantages for many organizations, from cost savings to an enhanced end-user experience. Noteworthy benefits include:

• Cost savings: Lower expenses by combining more affordable transport options, such as broadband internet, with MPLS, resulting in a more cost effective model.
• Improved network performance: Optimize performance across all WAN links and ensure that mission-critical applications receive priority routing.
• Better security posture: Enforce unified policies and incorporate encryption, intrusion prevention, and more to strengthen defenses.
• Simplified network management: Relieve internal IT teams by allowing the MSP to handle daily operations, updates, and troubleshooting for all links.
• Rapid deployment and flexibility: Roll out new sites swiftly with standard configurations, automated provisioning, and agile reconfigurations to meet shifting needs.

Common Use Cases for Managed SD-WAN

A diverse array of industries and operational scenarios benefit from embracing a managed SD-WAN approach. Below are some common real-world applications:

Multi-Site Enterprise and Branch Connectivity

Organizations with numerous locations rely on stable WAN connectivity to maintain consistent, high-quality service. Managed SD-WAN unifies multiple sites under a single framework, improving data flow and streamlining WAN management.

Cloud Migration and Hybrid Cloud Environments

As businesses expand their reliance on cloud platforms, a well-defined wide area networking strategy becomes essential for ensuring stable performance. A managed software-defined wide area solution helps seamlessly connect on-premises systems with public or private clouds.

Supporting Remote and Distributed Workforces

Employees access critical applications from various geographies, making flexible and secure WAN connections indispensable. By implementing a managed SD-WAN, organizations enable consistent user experiences and maintain robust security controls.

Retail, Healthcare, Finance, and Other Industry Applications

Highly regulated sectors need cost effective solutions without compromising performance or compliance. Managed network services adapt to specific industry requirements while offering the reliability these environments demand.

How to Choose a Managed SD-WAN Provider

Deciding on a managed SD-WAN provider requires a thorough evaluation of not just technical strengths, but also the intangible elements that foster long-term success.

Key Evaluation Criteria

• Network coverage and reliability: Choose providers that offer broad backbones and multiple points of presence to ensure dependable connectivity and route traffic effectively.
• Security features and compliance: Look for advanced encryption, segmentation, and adherence to industry regulations that align with your organization’s needs.
• Service Level Agreements (SLAs): Verify the level of performance, uptime, and responsiveness guaranteed by the contractual commitments.
• Support and customer service: Prioritize 24/7 assistance and a proactive network operations center (NOC) dedicated to quick resolutions.
• Integration with existing infrastructure: Seek solutions that seamlessly work with legacy systems, MPLS setups, or other network services in place.
• Customization and co-managed options: Assess whether you can tailor the service to your workflows or maintain partial control over configuration and monitoring.

How Managed SD-WAN Aligns with Zero Trust

Zero trust emphasizes never assuming trust. However, managed SD-WAN services based on legacy technology often build a routed overlay with too much implicit trust—an IoT camera in a branch office may be able to reach a crown-jewel application in the cloud and spread malware. This is essentially how ransomware attacks spread throughout an organization.

While managed SD-WAN services reduce complexity and simplify day-to-day management, many organizations often deploy additional firewalls at branches to enforce strict segmentation and access controls for users, devices and apps. However security policy management is typically not included as part of managed SD-WAN services.

Zscaler Zero Trust SD-WAN

Zscaler Zero Trust SD-WAN securely connects branches, data centers, and remote users while completely redefining traditional WAN architectures by integrating advanced zero trust principles. Unlike conventional SD-WAN setups, Zscaler's solution prevents lateral threat movement and eliminates the complexity of legacy firewalls and VPNs, directly aligning with strategic business objectives such as rapid deployment, simplified management, and improved security posture. This innovative approach delivers immediate operational benefits, including:

• Accelerated branch deployment with built-in segmentation to protect critical assets
• Elimination of complex VPNs and traditional firewall setups to streamline network infrastructure
• Prevention of lateral threat movement by providing direct access to applications—not the network itself
• Enhanced end-user experiences through optimized, direct-to-cloud traffic flows

Request a demo today to see how Zscaler Zero Trust SD-WAN can revolutionize your organization's connectivity, security, and agility.