title: How to get the specific <Ad ID, Campaign ID> that was clicked on from the landing page?
body: <p>I've been searching for a solution to this, which I thought would be trivial, and seems pretty much impossible. </p>
  
  <p>Here's the situation: I set up an AdWords campaign, ad groups and ads. I point them to www.mysite.com </p>
  
  <p>Once visitors arrive to my site through one of my ads, I want to know which exact ad they clicked on (and campaign, as apparently the ad id isn't globally unqiue). Is this possible?</p>
  
  <p>I first tried by enabling Destination URL auto-tagging, but seems like the gclid parameter is pretty much useless.</p>
  
  <p>Then I looked at the UTMZ cookie, but it seems like at most (correct me if this isn't the case), you get the campaign number (is this even the ID in AdWords?) and the keywords searched or the ad's keywords, one of those. Not anything I can uniquely identify the ad by, right?</p>
  
  <p>Finally, I looked at ValueTrack, although again correct me if I'm wrong, but this would mean manually changing the destination URL of each of my ads in AdWords, right? Even doing this, I'm not sure I can get something that lets me uniquely identify the clicked ad. Is {creative} what I want? It's described in the docs as the "unique ID of the creative", does that mean this includes the Campaign.Id and the AdGroupAd.Id?</p>
  
  <p>Thanks!</p>