What Is SD-WAN? A Practical Guide for Network Engineers
What Is SD-WAN? A Practical Guide for Network Engineers Enterprise WAN has a problem. For decades, organizations have paid premium prices for MPLS circuits to guarantee application performance between branch offices, data centers, and headquarters. The architecture made sense when all traffic was internal and all applications lived in the data center. Then cloud happened. Today, a branch office in Munich sends its Microsoft 365 traffic through a 200 ms MPLS backhaul to Frankfurt, then out to the internet, then to Microsoft’s European edge — adding 60 to 100 ms of unnecessary latency to every Teams call and SharePoint sync. The network was built for a world that no longer exists. ...