Cloudist offers partners to use their own domain/URL for the Cloudist portal (example: portal.companyname.com) as a add on service. Please read below about the responsibilities:
Partner
Sets up DNS pointers records (e.g., http://portal.companyname.com to IP 1.2.3.4 (Cloudist allocates IP)) in their domain
Provides an appropriate certificate (can be wildcard *.companyname.com or specific to http://portal.companyname.com)
Hands over the certificate and keys/passwords to Cloudist
Is responsible for monitoring the certificate's validity and sending a renewed certificate when necessary
...
Sets up a load balancer for the domain http://portal.companyname.com, manages and monitors it
Please note that a majority of the email communication and documentation in the portal will still include Cloudist.