erver Side Tracking is “the new black” that everyone is talkeing about and GTM Kit is supporting it. If you follow Google’s guide on how to setup server-side tagging you can create your own server-side container and then you must specify your custom GTM Server Side Domain as shown below:
If you customise you server-side container you can also change the sGTM container identifer. If you enter dafsj3j3jkd the container script will request dafsj3j3jkd.js instead of gtm.js