Software Defined Wide Area Network or SD-WAN is a specific application of SDN or Software Defined Networking technology that’s applied to wide area network which is used in connecting enterprise networks including data centers as well as branch offices over big geographic distances. What’s more, WAN may be used in an effort to connect branch offices to central corporate network or when connecting data centers separated by distance.
Back before, WAN connections are often using technology that requires special proprietary hardware. SD WAN movement seeks to move a bigger part of the network control to the cloud using a software approach.
This makes sense as more and more customers are demanding for an open, cloud-based and flexible WAN technologies instead of installing specialized or proprietary WAN technology that usually involve fixed, expensive or proprietary hardware. Majority of the SD WAN offerings for instance may be used in securing and improving internet connectivity, which makes it more competitive with the most costly legacy WAN technologies like MPLS or T-1. Most of the time, software defined WAN is using internet broadband connection to replace these expensive solutions. Virtualization technology also applies security and VPN or Virtual Private Network technology to broadband connections in an effort to make it more secure.
By provisioning services and connectivity through the cloud, SD WAN creates the benefits of removing the potentially costly routing hardware. The emerging SD WAN technology can be more flexible too like for instance, since SD WAN connectivity could be controlled over the cloud, customers can scale up or burst connectivity during peak demands. Know about sd wan vs mpls!
The end goal of SD WAN technology is for it to deliver a secure, simple cloud and business class enabled wide area network connection with as much software-based and open technology as possible. As a matter of fact, this can be used to provide basic WAN connectivity or it may be used for more premium business services similar to WAN optimization, VPN as well as application delivery control or ADC.
Actually, majority of the startups are after potential in SD WAN market, which is quite likely billions of dollars. Many startups are not the same though as they are varying in their market approach like for example, some focused more on accelerating SaaS or Software as a Service applications over the cloud, some on the other hand are after branch office connectivity using SD WN while others have built a global network so by that, companies may make use of WAN as NaaS or Network as a Service. According to research, there are more than 360 million dollars that have already been invested to software defined WAN startups. Learn more about sd wan vs mpls!