What Is SD-WAN?

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A Software Defined Wide Area Network (SD-WAN) implements interconnection among enterprise branches, headquarters, and multiple clouds, and enables applications to select optimal links for data transmission among hybrid links (including MPLS, Internet, 5G, and LTE links), providing high-quality cloud service experience.
SD-WAN improves the reliability, flexibility, and O&M efficiency of enterprise branch networks, makes branch networks always online, and ensures service continuity and stability.

https://info.support.huawei.com/info...en/SD-WAN.html