I have three sites, each with a small network.  The three are then interconnected using IPSec VPN tunnels.  The primary site is my house.  The other two sites are a second house (hundreds of miles away) and another building 25 miles away.  As long as everything is working, I am fine, but if something breaks at either of the remote sites, I am in trouble.  Would replacing everything with Omada compatible devices solve my problem?  It appears there is a per device license fee for the cloud SDN but I cannot find the price anywhere---what is the per device cost and for what period of time?  Finally, is the software SDN (which I assume is a one time cost or a single license fee) accessible through the public internet (as long as it is on a publicly accessible port) so that it can control devices in the two remote sites even if the CPN link is broken?