The UI is very easy to use for anyone with basic knowledge of Linux OSes or Windows systems as well! It's free which makes it more appealing than other paid solutions out there (eg Cloudflare). I'm not sure how much this impacts its ability/desire in security features but their documentation leaves something be desired when looking at some advanced settings such as IPv6 allocation etc - perhaps that was just my lack of experience using them? We're running multiple servers behind one load balancer so we needed an all-inclusive solution rather then having each server have separate nameservers set up independently; plus they are pretty good about keeping things updated & stable too..