GA Connector tracks two sets of parameters: first-click and last-click.
Sometimes users may come to your site multiple times from different source. For example, a user may have seen your Facebook ad,
- Seen your Facebook ad and clicked on it.
- Came to your site, but didn’t convert yet.
- Remembered about your company in a few days, typed its name in Google and came back to your site.
In this example, first-click data would correspond to a visit from Facebook, and the last-click data would correspond to Google Organic visit.