Summary
Linking Google Analytics with Google Ads allows the manager to reach that specific audience with remarketing campaigns in Google Ads. The audience is created once in GA4 using behavioural conditions, then shared through the product link and applied to campaigns in Google Ads. Without that link, the audience stays inside Analytics and cannot be targeted with ads.
Nitin Batra is a Google Analytics 4 certified professional who configures GA4 property links, builds audience definitions and manages remarketing segments in Google Ads for eCommerce clients.
Last updated: August 16, 2026
Linking Google Analytics 4 with Google Ads lets the eCommerce manager export that repeat product page audience into Google Ads and reach those same users with remarketing campaigns across Search, Display, YouTube and Demand Gen.
- It sends an automatic email report about that audience to the marketing team.
- It prevents that audience from seeing any more ads to avoid overexposure.
- It allows them to reach that specific audience with remarketing campaigns in Google Ads.
- It provides a detailed report on this audience’s activity within the Google Ads interface.
The correct answer is: It allows them to reach that specific audience with remarketing campaigns in Google Ads.
Key Takeaways
- – Linking GA4 with Google Ads allows the manager to reach that specific audience with remarketing campaigns in Google Ads.
- – The GA4 audience appears in Google Ads under Tools, Audience manager, Your data segments, and can then be applied to Search, Display, YouTube and Demand Gen campaigns.
- – Audiences are built once in GA4 from behavioural conditions such as event counts, page paths and session scope, then reused across linked Google Ads accounts instead of being rebuilt separately.
- – The link only works if Personalised advertising is enabled and Google signals or user data collection is on, and the list must meet Google Ads minimum size before ads can actually serve to it.
Where exactly do I link Google Ads to a GA4 property?
Go to Admin, then under Product links click Google Ads links, then Link. You pick the Google Ads account or manager account, choose whether to enable Personalised advertising and auto-tagging, then review and submit. You need Editor access on the GA4 property and admin access on the Google Ads account for the link to complete.
How do I build an audience for users who viewed a product page more than three times in a week?
In Admin, Audiences, click New audience, then Create a custom audience. Add a condition on the page_view event with a parameter filter such as page_location contains the product URL, set the event count to greater than three, and apply a time period condition of within seven days. Save it with a clear name so it is easy to identify inside Google Ads.
Does the GA4 audience include users who visited before I created it?
Yes, but only partly. GA4 backfills audience membership for users who met the conditions in the previous 30 days, so a newly created audience is not completely empty on day one. Anything older than that window is not evaluated, which is why serious remarketing programmes create their core audiences early rather than at campaign launch time.
Why is my GA4 audience showing zero size in Google Ads?
The most common causes are Personalised advertising being turned off on the link, Google signals or user data collection not being enabled, or the list simply being too small to serve. Google Ads requires a minimum active user count before a data segment can be targeted, and it differs by network, so a very narrow condition like more than three views of one product page can take time to fill up.