What’s the difference between sessions in Campaigns report and Google Ads report.
I have 1357 sessions in the Campaings report for google / cpc and 1263 sessions in the Google Ads report - same period.
Hi! In theory these two metrics should be the same, but in practice some small discrepancies can occur due to the ways that Piwik PRO calculates sessions vs. how GAds does it (and what data is imported from there).
Google Ads may automatically filter certain clicks from your reports, while Analytics reports on all the resulting sessions. Google themselves have documented a similair case here.
It could also be an issue with GCLID matching. This often happens when a visitor is bookmarking the URL with GCLID parameter, and since GCLID is often unique per click this could have been recorded on our end but excluded on Google Ads end.
The Campaigns report counts sessions based on the campaign/UTM data captured by Piwik PRO, while the Google Ads report relies on traffic that can be matched to Google Ads data.
So, a difference like 1,357 vs. 1,263 sessions can occur due to attribution differences, missing GCLIDs, UTM tagging, redirects, or consent/tracking issues.