title: What is the proper way to setup Live environment on Google Tag Manager?
body: <p>Using Google Tag Manager, I want to use the <strong>Environments</strong> feature.
  While the Environments setup is pretty straightforward, there is a special case regarding the Live environment setup. More specifically, <a href="https://support.google.com/tagmanager/answer/6311518?hl=en" rel="nofollow noreferrer">documentation</a> mentions:</p>
  <blockquote>
  <p><strong>Note:</strong> Every container is set up with a &quot;Live&quot; environment by default, which always points to the container version that is currently published. You don't need to define the Live environment.</p>
  </blockquote>
  <p>Now, in order to setup GTM in my website for Live, I have 2 possible snippets: the &quot;default&quot; snippet (Which can be obtained by Admin &gt; Install Google Tag Manager in my container) and the &quot;Live&quot; snippet (which can be obtained via Admin &gt; Environments &gt; &quot;Live&quot; &gt; (Actions) Get Snippet).</p>
  <p>The problem here is that the first script does not seem to map properly to the Live environment, as using it in a Lookup Table, maps to the default value.</p>
  <p>On the other hand, the second script seems to be working properly. My concern is that it uses 2 additional parameters (<code>gtm_auth</code> and <code>gtm_preview</code>), and I am not sure if they should be defined to Live environment. Additionally, several blogs suggest the use of the first script on the Live environment.</p>
  <p>My question - and concern is, which of the 2 scripts is the optimal to use in order to setup Live Environment in GTM, in terms of proper installation, usage and security?</p>
  <p>Please consider that suggesting the usage of different containers is not an option.</p>