Multi Domains

Server Google Tag Manager allows setting only one custom subdomain per container. This happens due to a technical limitation as you can add only one Tagging Server URL in the GTM interface.

Stape.io Business Plan users can map several subdomains to one server container. This can be extremely useful if you have a separate website for each country or language. Or maybe have a set of sites in one niche and use one sGTM for all of them. 

To set up a multi-domain, go to your container settings, click edit and add as many domain names as you want—that simple.