Could you somehow understand what kind of features SD-WAN has? So why have SD-WAN vendors and existing network vendor products also entered the SD-WAN market in the last few years?

This is due to the recent use of Microsoft's Office 365 and other business applications in the cloud, and the increasing use of large-capacity content such as web conferencing systems and streaming video distribution.

In Japan, many companies have adopted a configuration in which Internet access is performed from bases nationwide via Proxy servers located at the head office and data centers. In the past, business applications in the head office and data centers excluded the use of the Proxy server and used the Proxy server only when accessing the Internet. In addition, the amount of Internet access traffic has not become a major issue compared to the current situation, and we were able to comfortably perform business by selecting the line between the head office and the base according to the traffic of the business application (Fig. 2). ).

However, due to the increase in cloud usage and large-capacity content usage of business applications mentioned above, the amount of communication between the head office and bases has also increased dramatically, and many companies are suffering from pressure on line capacity and increased load on Proxy servers. It has come (Fig. 3).

In the past, only some industries and companies, such as "there are too many bases to manage" and "want to reduce the cost of leased lines", can meet the demand for SD-WAN in Japan where high-quality lines can be used at low prices. I was supporting it. In the last few years, many customers in Japan are considering the introduction of SD-WAN, regardless of the number of bases or the existence of dedicated lines, which is a problem in the cloud era.

How SD WAN works