BlogEnterprises Are Opting to Replace Traditional Edge Routers with SD-WAN – And For Good Reason

Organizations are swapping routers for SD-WAN because the latter uses a cheaper and more flexible architecture for secure access to software running in the cloud or the private data center. But before jumping into the many benefits and reasons for adopting SD-WAN, let’s back up and define exactly what it is. Software-defined wide area networking (SD-WAN) decouples the networking hardware from its control mechanism, providing a better approach to deploying, managing, securing, and scaling networks – particularly for organizations with numerous remote or branch offices.

According to IDC:

SD-WAN continues to be one of the fastest-growing segments of the network infrastructure market, driven by a variety of factors. First, traditional enterprise WANs are increasingly not meeting the needs of today’s modern digital businesses, especially as it relates to supporting SaaS apps and multi- and hybrid-cloud usage. Second, enterprises are interested in easier management of multiple connection types across their WAN to improve application performance and end-user experience.”

IDC expects the SD-WAN market to grow at a 30.8% CAGR rate from 2018 to 2023 to reach $5.25 billion. In addition to easier management as mentioned above, numerous additional SD-WAN benefits clearly support this growth opportunity, including:

  • Having latency-sensitive VoIP traffic getting priority over data headed to the public internet, improving productivity and providing better corporate agility.
  • SD-WAN routing consolidates many critical additional network services, including malware detection and security controls to WAN optimization across the wide area network.
  • A SD-WAN solution saves significant IT dollars as it replaces many functions that are traditionally spread across separate appliances.

SD-WAN solutions can eliminate the need for edge routers, firewalls, complex network segmentation. They provide optimized wide area routing along with complete visibility and control functions in a single console. They reliably and actively use broadband to transport application traffic instead of simply using it as an idle backup. SD-WANs even replace MPLS with broadband allowing you to not only increase your WAN bandwidth but lower your overall WAN costs by doing so.

We’ve been swapping out edge routers for SD-WAN solutions because it is a much cheaper and more flexible architecture for apps in the cloud. SD-WANs are a virtual WAN architecture. A SD-WAN is a more intelligent, cloud-first approach to build a WAN. In our iLab, we can walk you through the advanced features of SD-WAN, including how it detects, defends, and mitigates malicious activities on your network. Real world examples help you see and understand exactly how an SD-WAN can address your specific challenges.

About the Author

Mark Teter, Corporate Technologist

Mark Teter, Corporate Technologist

In his role, Mark is responsible for the strategic direction of ASG’s emerging technology offerings and advancing the deployment of present-day hybrid cloud solutions for our customers. Mark has served as Faculty Staff Member at Colorado State University and has written over 50 white papers on subjects including Data Center Ethernet, Linux and Open Source, Storage Area Networks and Computer Virtualization. He published Paradigm Shift in 2006, a book on emerging technologies. He is a Google Certified Professional Cloud Architect.