A Dynamic Domain Name System (DDNS) refers to the updating of Internet DNS name servers in real-time to keep the active DNS configuration of host names, addresses, and other information up to date. It is typically used when businesses have frequent changes to the public host-name-to-IP-address mappings, usually when companies use PPPoE or DHCP to obtain Internet access. Using a DDNS service provides an automated way to deal with the propagation of new hostname-to-IP address mapping across the Internet. DDNS service providers act as a broker to manage this process. Deep Edge is designed to the first Internet-facing device an external client would connect to when trying to reach the business, it needs to make sure that all Internet users route their traffic to it for each host name / domain that the are trying to reach on the business side. With the DDNS client, Deep Edge can communicate host-name-to-IP address changes to the DDNS service provider.

With the Deep Edge Dynamic DNS support, register their domains on the website of DDNS service vendors, and then configure information such as their account, password, and domain to have it maintained by Deep Edge. The DDNS provider allocates a static host name to the user; whenever the user is allocated a new IP address this is communicated to the DDNS provider by software (implementing RFC 2136 or other protocols) running on an endpoint or network device at that address; the provider distributes the association between the host name and the address to the Internet's DNS servers so that they may resolve DNS queries. The Deep Edge DDNS client monitors the public IP address changes and auto-synchronizes the IP address-domain mapping.