SD-WAN helps with each deployment since the device calls home to receive its configuration. This also leads to standardisation across regions, and the central controller acts as an inventory repository for all devices and configurations.
Monitoring and visibility:
SD-WAN appliances allow administrators to monitor and maintain entire WAN networks from a centralised portal, giving real-time statistics on network performance and quickly identifies any abuse of the network.
Another problem that SD-WAN, or one of the facets of SD-WAN addresses is that it is sometimes difficult to deliver new routers to remote locations. Having a centralised controller, allows a new CPE to be pre-configured and shipped to a new location with relative ease, allowing the user at this location to merely connect the device to the Layer 3 connection to connect the branch to the SD-WAN network.