The future of wide area networking is software-defined
What is software-defined WAN (SD WAN)
A software-defined WAN solution (SD WAN) is used specifically to connect data centers, branches or subsidiaries at the WAN edge. This has advantages such as dynamic path selection from existing technologies such as 4G/5G, LTE or MPLS (Multi-Protocol Label Switching). Since these connections have lower costs for the same Quality of Service (QoS), redundancy and significantly higher capacities can be provided.
An SD-WAN approach means using the Internet or cloud-native private networks instead of proprietary hardware. An SD WAN thus decouples the network from the management layer and separates the traffic management and monitoring functions from the hardware. This allows companies to use networks more flexibly and agilely, to control traffic in a targeted manner and to centrally deploy network services in the WAN.
Reasons for SD WAN
Modern SD WAN solutions have clear advantages over a classic MPLS connection. This is mainly because today's data traffic, which consists of advanced web applications and complex workflows, requires a more flexible and dynamic architecture for connectivity than traditional static MPLS connections can provide.
In the adjacent table you will find the main differences between the technologies on important topics.