As the market evolves, devices that only support SD-WAN are becoming less common. The future of SD-WAN won’t be developed as a standalone solution anymore. With ongoing technological advancements, SD-WAN is transitioning from being an independent technology to a core feature within WAN edge devices. In fact, it's becoming a necessary component for modern networking infrastructure. As the industry moves forward, SD-WAN will offer more application-focused services tailored for remote and branch offices. If you still believe that SD-WAN should remain separate, you might find yourself left behind.
The continuous development of SD-WAN aligns with the interests of both vendors and enterprises. Vendors see growing revenue potential in this space, while enterprises are looking to streamline their network infrastructure through SD-WAN, reducing both capital and operational expenses.
According to a survey by the Enterprise Strategy Group, 60% of SME IT organizations consider SD-WAN a key service for broader branch network capabilities. Only 36% of the 300 respondents viewed SD-WAN as a purely independent technology. This shift shows how deeply SD-WAN has integrated into the wider network ecosystem.
SD-WAN vendors are focusing on user needs, offering fast routing and switching solutions that help drive market growth. IDC predicts that SD-WAN infrastructure and service revenues will grow by 70% annually through 2021, with the market reaching over $8 billion.
**Why SD-WAN is Attractive**
Enterprises are increasingly adopting SD-WAN to cut costs associated with connecting branch offices to cloud-based applications. Instead of routing all cloud-marked traffic back to the data center, companies can now send those packets directly over the internet, which is faster and cheaper.
In recent years, startups dominated the market by introducing plug-and-play SD-WAN devices. However, today’s enterprises are seeking more advanced hardware that includes SD-WAN along with features like WAN optimization, firewalls, and IP services. Pure SD-WAN devices are no longer sufficient to meet enterprise demands.
Gartner analyst Andrew Lerner stated, “Over time, SD-WAN products will move from dedicated single-function hardware to software-based solutions running on multi-functional devices.†Major providers such as Cisco, CloudGenix, Nokia/Nuage, Iverbed, Silver Peak, VeloCloud, and Versa are leading this transition.
IDC analyst Brad Casemore added, “These SD-WAN vendors will build solutions in different ways, using various devices and strategies to create partner ecosystems and realize their long-term vision.â€
**Choosing the Right SD-WAN Vendor**
More than 40 companies currently offer WAN edge infrastructure, including SD-WAN devices. Gartner recently provided guidance on selecting the right vendor:
Start by evaluating your network service requirements and aligning them with your organization’s long-term architecture. If you’re planning to refresh your edge routing, consider an SD-WAN solution rather than a single-purpose device. Remember, the WAN edge may not meet the needs of every business unit or branch office.
Create a detailed list of requirements for each branch office. While SD-WAN often relies on broadband for internet connectivity, don’t assume that MPLS is obsolete. Gartner expects both internet and MPLS connections to continue delivering the performance, reliability, and security needed for the next three years.
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