SD WAN provides software visualization of a wide variety of physical lines to increase flexibility in connecting to offices, data centers, and the cloud, and to control traffic appropriately . Since WAN can be centrally managed, the management load can be expected to be reduced.
In addition, the communication speed can be optimized because the line that goes through can be selected from among the multiple lines that are configured, depending on the application and purpose of use.
SD WAN Differences between SD WAN and IP VPN that beginners should remember
IP VPN builds a VPN on a closed network of a telecommunications carrier called an IP network, and can be used only when contracting with a telecommunications carrier. On the other hand, SD WAN allows users to dynamically change the communication path for each application and load balance over multiple lines due to advances in software technology and virtualization technology.
Since IP VPN is provided by the telecommunications carrier, it is all managed by the telecommunications carrier, but since it requires operation and management costs, the cost tends to increase as the line capacity increases.
On the other hand, SD WAN allows you to connect bases with an existing Internet line even if you do not have the resources to build and operate it yourself. Since it can be set to take an appropriate route according to the importance of the data to be transmitted and security requirements, the flexibility of centrally managing each base on the management portal while suppressing the line installation cost is attractive .
From this point of view, it can be said that IP VPN is suitable for communication such as confidential information between bases, and SD WAN is suitable for telework introduction where flexibility is required.