Running many clients and domains on one account. 3 articles
Adding a second GTM setup on the same main domain, how the DNS setup works, and what happens at your plan's domain limit.
How one Measurebase domain tracks a site that runs on several subdomains, like www., shop. and app.: one snippet, one tagging host, one session, and what to watch out for.
DNS, consent, container access and launch sign-off — what agencies should collect before going live with server-side GTM.