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4.1 A custom sub-domain step is strongly suggested, but it is not needed. When the container is up and running, we’ll provide you with the default Tagging Server URL provided by taglify.io. Setting up a custom domain within your site's domain is highly recommended. It will enable you to set first-party cookies, making tracking more secure and resistant. Send your FirstParty Domain that you want to use for the setup with the ticket. The sub-domain should be random (use this website to generate a random string: Random.org). After that, create an A record that corresponds to the IP address given by taglify Service Center e.g. 34. 117.47.164 The DNS settings should look like the one in the screenshot.

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• Replace ${TAGGING_URL} with your tagging url. e.g. c3y1mavw4g.yoursite.com

• Replace ${CONTAINER_JS_ID} with with the container-js-id you got from taglify.io . e.g. y16rm8ykxy.js

• Replace ${WEBCONTAINER_ID} with your Web Container Id.

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<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://c3y1mavw4g.yoursite.com/y16rm8ykxy.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-AAA9FZC');</script>
<!-- End Google Tag Manager -->

6. In order to use the preview mode in your Google Tag Manager account, you have to configure it in the Container Settings. Open the admin panel of your container. Click on Container Settings. Click on "Add URL" under Server container Urls. Enter the tagging url. If you are not using a firstparty first-party setup, enter the tagging url you received from taglify.io .

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7. That end our topic Congratulation. The sGTM container has been set up. You may now start configuring server-side tagging in sGTM.

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