title: GTM Cross-Domain Tracking for new AdWords conversion
body: <p>You may all know that Apple introduced 3rd party cookie deletion after 24 hours into Safari 11 on Mobile and Desktop called Intelligent Tracking Prevention ITP.</p>
  
  <p>This forced Google to change their AdWords pixel to use a 1st party instead of a 3rd party cookie.</p>
  
  <p>I'm not sure what to do in the following scenario:</p>
  
  <p>Landing page is domain1.com with a link to domain2.com/register where users can fill out a form and convert and it will load domain2.com/thankyou</p>
  
  <p>In the past I would just set up GTM like this:</p>
  
  <p><strong>Tag: AdWords Remarketing</strong></p>
  
  <pre><code> Trigger: All Pages
  </code></pre>
  
  <p><strong>Tag: AdWords Conversion</strong></p>
  
  <pre><code> Trigger: Page View, where url=domain2.com/thankyou
  </code></pre>
  
  <p><strong>Tag: Universal Analytics</strong></p>
  
  <pre><code> Set field: autoLinker=true
  
   Add cross-domains: domain2.com
  
   Trigger: All Pages
  </code></pre>
  
  <p>This worked perfectly because Analytics uses a 1st party cookie, so we make sure the cross-domain tracking for Analytics works. For AdWords we didn't need to worry, as it used a 3rd party cookie that will perfectly work across domains.</p>
  
  <p><strong>Question</strong></p>
  
  <p>Since AdWords switched to a 1st party cookie, they nag us in GTM to add a Conversion Linker without much settings to set. I don't see how this works with a 1st party cookie, without a cross-domain linker for AdWords.</p>
  
  <p>Any ideas if for AdWords everything just works without any sort of cross-domain linker?</p>