SD-WAN or Software Defined Wide Area Network

What Is SD-WAN?

SD-WAN or software-defined wide area network core functionality is to enable organizations to securely connect their end-users to their applications and services. SD-WAN is a digitized WAN architecture that also enables establishments to use a diverse range of broadband internet services such as LTE, MPLS, or Multi-Protocol Label Switching. Businesses can leverage any custom combination of these broadband internet services to build customized networks according to their business needs.

FortiGate firewall delivers fast, scalable, and flexible Secure SD-WAN for cloud-first, security-sensitive, and global enterprises. Fortinet’s Security-Driven Networking approach consolidates SD-WAN, next-generation firewall (NGFW), and advanced routing to:

  • Deliver superior quality of experience at any scale.
  • Accelerate network and security convergence, and simplify WAN architecture.
  • Orchestrate consistent network and security policies.
  • Achieve operational efficiencies through automation, deep analytics, and self-healing.

SD-WAN Explained

Why Is SD-WAN Important?

SD-WAN offers remarkable benefits to business ventures looking to leverage cloud for business and improve their networking capabilities. Some of the most prominent benefits and functionalities that implementation of SD-WAN can offer enterprises include:

Cost savings

By deploying SD-WAN, enterprises can cut down their costs on ongoing network maintenance. The secure remote connectivity capabilities of SD-WAN allow enterprises to remotely manage, upgrade and maintain their networks without having to hire extra IT staff in different locations.


SD-WAN gateways offer real-time traffic management by monitoring the health and security of each WAN link connected to the main SD-WAN. If there is traffic congestion, SD-WAN automatically reroutes the incoming traffic and avoids delays. Furthermore, the implementation of SD-WAN also enables network administrators and engineers to quickly create new services and update/modify the existing network services to meet the need-specific and time-specific business requirements. This allows enterprises to remain agile, and current with the latest requirements by making necessary changes in a timely manner.

Application performance

SD-WAN can allow businesses to efficiently increase or reduce performance for their specific applications and services. It can also be done on an application-by-application basis. SD-WANs can also lower or eradicate the need to backhaul traffic through a central point of Internet access. It can ultimately reduce latency and improve the user experience for SaaS and other cloud-based applications.

SD-WAN and remote connectivity

Software-Defined WAN plays a critical role in remote connectivity and digital security. As remote working and virtualization has become a critical component of today’s digital age, enterprises are rushing to cope with rapid digital transformation trends. Recent studies have shown the importance of SD-WANs in remote workplaces as SD-WAN and increasingly deployed SASE or secure access service edge systems are increasingly becoming a key for achieving secure remote access and reliable performance for cloud applications. The latest SD-WAN adoption trends also exhibit a flurry of SD-WAN deployments in the near future as it was revealed in the latest survey that last year, just over half (56%) of respondents said they were piloting, installing, or upgrading SD-WAN installations.


sd wan

The differences can be found by considering the three (3) key points which are cost, security, and performance. In general, SD-WAN is better than MPLS in all these three (3) main focuses when compared together. Below is the overview table that shows the differences between SD-WAN and MPLS:

CostIntegrated services greatly reduce costs.Higher cost to own, build, and maintain.
SecuritySecure SD-WAN from Fortinet is deployed as an integrated function within an NGFW.Require deploying a firewall and additional security functions.
PerformanceRecognizes applications and can adapt bandwidth accordingly.Provide a fixed level of bandwidth.
ComplexityIf no built-in security, an add-on is required.Web traffic backflowed to the data center.
VisibilityBroad application visibility.Limited due to packet routing.
ScalabilityScalable with full mesh.Take a longer process (up to months) to scale.

Empower Workforce to Work Remotely

secure sd wan

As the global SD-WAN market is anticipated to exceed $5.25 Billion by 2023, it is nothing but an indicator of the rising awareness and adoption of SD-WAN by enterprises globally. From Increased bandwidth at a lower cost, centralized management across branch networks, holistic view of the networks, to more options for connection type. Talk to us at Spectrum Edge, we offer an industry leading SD-WAN such as Fortinet FortiGate that delivers fast, scalable, and flexible Secure SD-WAN for cloud-first, security-sensitive, and global enterprises.