We now support an additional metric from AdWords (Google Ads) in Funnel! You now have access to 'Customer ID' under the 'Shopping Performance' report.
If you've already connected a 'Shopping Performance' report to Funnel, no action is required to obtain data for this metric going forward. If you haven't, all you need to do is create a new AdWords connection and select the relevant report:
You can learn more about the data you can obtain from AdWords in this article.
We hope you find this additional metric useful. If you have any questions or if you would like historic data for this field, please contact firstname.lastname@example.org and we'll be happy to help!