SD-WAN Use Cases: Here’s Everything You Need To Know

Since the inception of the Semi-Automatic Ground Environment (SAGE) by the U.S Air Force in the late 1950s, WAN technology has improved over the years.

Businesses are integrating technology in line with this fast-paced tech world, stay ahead of the competition and satisfy their consumers’ needs. Notably, organizations have either automated critical business systems, moved to the cloud(s), or embraced Software-as-a-Service. While this ultra-modern tech will help you serve your customers better, you might have to deal with ultra-modern IT issues such as network performance and management, application-software inconsistencies, and data exposure.  

Behold Software-Defined WAN (SD-WAN) that combines software-defined networking (SDN) and WAN. This means you can control your WAN from a central point via the cloud, and eliminate these modern tech challenges.

Use Cases For SD-WAN

An April 2019 IDC study discovered that 95% of organizations have embraced and deployed SD-WAN technology or plan to do so within the following 24 months. Regardless of the industry, SD-WAN is revolutionary across the board. While there are so many drivers, the leading SD-WAN use cases include:

Direct Internet Access (DIA)

The traditional WAN limits the way branches access cloud-based apps and send traffic out of the local internet transport. A branch has to send data directly to a centralized data center for inspection resulting in suboptimal performance and straining the WAN due to the applications consuming much of the bandwidth.  

With SD-WAN, a branch can bypass the centralized data center inspection and send traffic directly out of the local internet transport allowing direct access to all cloud-based apps without unnecessary bandwidth consumption eliminating unforeseen downtime, and boost efficiency.

Branch Connectivity and Security

Unlike hub-and-spoke WANs, SD-WAN allows direct cloud – branches connectivity for efficiency, reduced overhead, boost transmission, and application performance.

Additionally, SD-WAN ensures the direct connection is secure by cushioning against modern cyber threats resulting in a consistent and secure quality of service.

Multicloud Connectivity and Access

The traditional WAN operates on a centralized data center concept which is inefficient with SaaS environments. SD-WAN ensures workflows are optimized for cloud systems such as Microsoft Azure, and Amazon Web Services.

Furthermore, SD-WAN enables you to create multiple connectivity levels across the clouds resulting in improved performance.

Insights into the Network’s Operations and Performance

Data traffic from apps that consume huge heavy bandwidth, mobile devices, and cloud-based systems cause the network to congest, increase latency leading to downtimes.

With SD-WAN, you have the view the entire network. You can be able to check on the network’s performance, data traffic and detect any challenges early for rectification before they cause downtime. In addition, having a bird’s eye view of the network will help you detect any areas that need improvement to boost a positive customer experience.

Optimized Application Performance

In every business, consumers demand consistent quality services, excellence, and improved customer experience. It’s the duty of the organization to provide and maintain the highest service level agreements. With SD-WAN, you can map a network where all the key apps nurture a consistent and quality SLA regardless of the network problems.

To achieve this, you can route traffic efficiently over multiple circuits to eliminate congestion, improve efficiency and boost performance. Furthermore, SD-WAN has quality of service abilities to enable you to prioritize critical applications and redirect the necessary resources to these apps for optimized performance.

Benefits Of SD-WAN

SD-WAN has gained popularity in the past few years and is ousting traditional WAN that’s not meeting modern IT challenges and consumer needs. According to an IDC study, SD-WAN has become among the most sought-after technology in enterprise networking with a 30.8% compound annual revenue growth rate through 2023 and is expected to hit $5.25 billion.

The increase in popularity and integration by businesses is due to the following benefits:

The Cloud-Based Benefit

Traditional WAN includes a centralized data storage for data inspection before transmission, then transmit over public internet transport that has slow speeds and considerable latency. Since SD-WAN eliminates the need for centralized data storage, such as colocation facility, your organization won’t deal with low transmission speeds and latency.

Additionally, SD-WAN eliminates the limited bandwidth common in other technology such as MPLS. With a reliable Tier-1 network, you can transmit data over long distances efficiently.


67% of respondents of an IDC survey said they anticipate a 20 – 30% cost savings with SD-WAN, while 33% leaned on 5-19%. SD-WAN reduces the costs associated with the traditional WAN such as numerous network hardware, such as routers, at each branch. Furthermore, SD-WAN utilizes low-cost internet, offers direct cloud access, and a reduction in traffic on the core WAN network.

Lastly, SD-WAN eliminates the increased operational costs brought about by inefficiencies marring a WAN such as latency and slow transmission speeds.


Ultra-modern tech can boost your business’s efficiency and customer experience. But, it can also expose your business to ultra-modern cyber threats.

Fortunately, SD-WAN offers inbuilt security. However, it is basic, such as a basic firewall and VPNs which might not be enough against certain cyber threats. You can either boost your SD WAN’s security by integrating a new security system and upgrading your firewall, or install an SD-WAN with Next-Gen Firewalls (NGFW) with intrusion detection and preventions systems, sandbox, data loss prevention, and SSL certification.


Businesses and consumers need IT solutions STAT. To achieve this, IT teams have to work round the clock to develop and roll out the new systems in line with modern IT tech. Wish SD-WAN, your IT teams can detect the areas that require changes and cab quickly and easily implement these changes. Furthermore, SD-WAN provides for real-time monitoring. You can detect all the areas that need improvement for an increased user experience.

Increased Performance

With SD-WAN, you can configure key systems on the network to receive priority resources. This way, you can steer these systems over the most efficient routes for improved performance. Fr instance, you can configure so that the heavy files, such as video, can move over high-capacity circuits.

Where To Get SD-WAN

Now you are convinced why your organization needs to switch to SD-WAN. With a number of providers in the market today, choosing a reliable one with a smooth purchase process can be tricky. Luckily, Cteleco can make this process easier by cutting out the quote solicitation process and connecting you directly with providers. So, if you need to switch to SD-WAN, contact us today.

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