A custom domain is a unique label of your brand or company connected to a website’s IP address. Users can type in this unique URL to connect to and view your site. Document360 gives you the option to “map” your existing domain to your documentation website.
Configure custom domain for the project:
Document360 checks if the custom domain is available (valid) for mapping
The domain ownership is verified by matching the DNS (Domain Name System) records of the custom domain
The SSL certificate is generated by Document360 (on Let’s Encrypt) and bound to the mapped custom domain
Here is an elaborate guide for you to refer to: Custom Domain