For those working in networking, DNS should not be an unfamiliar term. So, what is DNS? DNS stands for Domain Name Server. What is Smart DNS (Intelligent DNS)? A regular DNS server is only responsible for resolving IP records for users without determining where the user is coming from. This means all users will resolve to a fixed IP address. Smart DNS changes this concept. Smart DNS will determine the source of the user and make some intelligent processing decisions, then return the IP address after intelligent judgment to the user.