Companies today must be able to transact business securely in order to stay ahead of competitors and build a reputation for excellence, and business architectures are changing to meet these new demands. Wide area networks (WAN) offer the ability to connect branch offices and data centers across large geographical areas. When combined with software-defined networking (SDN) technologies which are delivered through the cloud, a software-defined wide area network (SD-WAN) delivers effective tools that enterprises can safely deploy to retain and expand their profitability.
Virtual private networks (VPN) that are contained in a cloud environment offer cost reductions, improved network management, and an effective user experience for employees and customers alike. This same technology applies to broadband internet connections, increasing their security. Instead of purchasing capital intensive WAN technologies like multiprotocol label switching (MPLS), the migration to SD-WAN provides layer-2 and layer-3 switching possibilities through VPN, optimization, network as a service (NaaS), and application policy and delivery controls.
How It Works
SD-WAN technology uses secure broadband connections to replace more expensive legacy technologies. Routing hardware is exchanged using specific provisioning and connectivity through cloud software, which enables companies to scale up during times of peak demand. Security is assured through VPN, and businesses can deploy additional optimization through application policy and provision controls.
For enterprises that now rely on some type of public, private, or hybrid cloud model (that included on-premises servers), SD-WAN delivers effective methods for managing and optimizing the mix of MLPS, Ethernet, cable, and DSL that originates from a variety of local access providers.
Because of its cost to benefit ratio, SD-WAN use is expected to rise rapidly over the next few years. By automating the configuration of edge routers and channeling traffic to less expensive broadband use, businesses like retailers, restaurant chains, and bank franchises find easier ways to manage hundreds of small sites and create cost-effective bandwidth to access cloud storage and applications, all while ensuring security and performance. Network performance results include:
- Lower Cost—By employing more broadband and fewer private links, the endpoint monitoring automatically provisions packet deliveries using the most efficient configuration for the least cost.
- Decreased Complexity—Routing protocols choose the best method and stick with it, and they won’t react to packet loss or congested links without external manipulation. SD-WAN dynamically routes traffic according to immediate network conditions. It’s still complex, but there’s less work required to maintain optimum performance.
- Increased Flexibility—This technology allows businesses to utilize the most cost-effective form of path calculation. Mission critical or SLA-bound applications are routed through the virtual MPLS, which also manages bandwidth consumption, while other apps, backup WAN, and traffic without asymmetric routing can be transmitted through less expensive public cloud.
SD-WAN services better align enterprise networks for optimum performance. By delivering secure, business class connections using cloud-based WAN in a software-defined environment, companies receive better performance, security, and provisioning without the high costs of legacy hardware.