Hmm, are you sure you're reading the right item description? That would be accurate for one of their router-only gateways ("unifi network server" is the DIY-hosted application I mentioned). The boxes with built-in controller software do not need an external manager, and AFAIK can't be managed by another local box. There is some provision in them for remote control from UniFi's cloud management if you want that, but I don't know quite how that works --- maybe @Tech9 can fill in details.This is where I'm confused. The cloud gateway is what is managed by one of those three things. You said it's an alternative which isn't exactly what the description says. That gateway needs to be managed "With a cloudkey, official unifi hosting, or unifi network server"