These two metrics are defined as follows:
- Conversions (visits): number of visits with at least one conversion.
- Conversions (prior attribution): number of prior visits with at least one conversion.
Prior attribution allows you to distinguish between visitors who came to your site for the first time via a campaign and who converted later via a natural source.
April 6 at 10am:
Visitor A: makes a visit without conversion, coming from an email campaign.
April 6 at 10pm:
Visitor A: makes a visit with conversion, coming from a Search Engine source.
April 6: we will obtain a conversion for the natural Search Engine source and a priori attribution conversion for the Emailing source.