You can use a single FQDN for all services or multiple FQDNs for each service. If you are using multiple FQDNs, you require an external interface on the reverse proxy for each FQDN and separate certificates for each FQDN.

In a single FQDN environment, remote clients and endpoints that participate in conferences interact with multiple components through HTTPS. To eliminate the need for multiple external public IPs, FQDNs, and certificates, the URL rewriting method is used. Using this method, clients and endpoints can access conferences using a single FQDN and a single IP address through port 443.