When you advertise on the Google Display Network, you’re able to access what’s called impression reporting. This feature allows you to track users who visit your website after seeing your display ad – even if it doesn’t occur immediately.
As you can imagine, this makes it much easier to determine how influential your ads are on your audience.
It can tell you exactly how many of your ads were served to the user before conversion, and the multi-channel funnels reporting tool on Google Analytics provides insights by highlighting the path to conversion across all the channels they saw your ads.