The application needs a domain name to be easily accessible by end-users (e.g. demo.daqmon.com) and to get a TLS (SSL) certificate (see also Security).
buying the domain name at a registrar
configuring the domain name system to link the domain name to the IP address of your server and
managing the domain name (e.g. annually renew your contract with the domain-name registrar).
When you order the optional Domain Service, we handle all these tedious tasks for you.