Source: Google Adwords and Facebook Ads

Marco, this is doable and it's exactly the kind of thing UTM parameters are built for.

Set up unique UTM tags on the URLs behind your Google and Facebook ads (something like `yoursite.com?utm_source=google&utm_medium=cpc&utm_campaign=brand`). Add hidden fields to your Typeform for utm_source, utm_medium and utm_campaign, and Typeform will pull those values straight from the URL into the submission. So every lead that comes in tells you which platform, which campaign, even which ad group sent them, and from there you can go check close rates or deal quality against that in your CRM.

One thing to watch for: this only works if someone fills out the form on the same page they land on from the ad. If they click around your site first, the UTM falls out of the URL and that field just comes through blank on the lead.

If that ends up being a problem once you're actually running traffic, that's really the only gap in the native setup, tools like Attributer (I'm the founder) fix it by capturing the UTMs on arrival and storing them in a cookie so they still get written into the form later, no matter how many pages the person visits first. It'll also tag leads that come from Organic Search or Organic Social (i.e. not just the leads form your paid ads), which is useful context once you're comparing lead quality across sources.