title: Sub-domain tracking with Google Tag Manager
body: <p>I'm trying to set up tracking with GTM between the main domain and its subdomain. I've read a lot on this topic already, including <a href="https://support.google.com/tagmanager/answer/3561401?hl=en" rel="nofollow">this Google guide</a> (it's about different domains but not sub-domains) and guide from Lunametrics. But still I can't find the answer.</p>
  
  <p>So what I have now:</p>
  
  <ol>
  <li>site.com and blog.site.com</li>
  <li>Two separate containers for each of them</li>
  <li>Two different properties in Universal Analytics.</li>
  </ol>
  
  <p>What I need is tracking the domain with it's subdomain. I assume I'll need to create a separate view with filters in GA. Please let me know how to configure that tracking right. I wouldn't like to use one single container for the domain and its subdomain. </p>