Building GA4 Audiences for Remarketing Campaigns

Why GA4 Audiences Beat Pixel Audiences

GA4 audiences leverage the full behavioral history you track — every event, every page, every purchase signal — to create more sophisticated segments than a simple pixel can. Combined with GA4's predictive audiences, you can target users based on likely future behavior.

Connecting GA4 to Google Ads

First, link GA4 to Google Ads: Admin → Google Ads Linking. Once linked, any audience you create in GA4 can be published to Google Ads automatically.

High-Intent Audiences to Build

Cart Abandoners (High Priority)

• Sequence: add_to_cart followed by NOT purchase within 3 days
• Membership duration: 30 days
• Use case: Dynamic remarketing ads showing the specific product left in cart

High-Engagement Non-Converters

• Conditions: Engaged sessions >= 3, Conversions = 0
• Membership duration: 14 days
• Use case: Users who are interested but haven't converted — use case study or social proof ads

Past Purchasers (Upsell)

• Conditions: purchase event occurred
• Membership duration: 180 days
• Use case: Cross-sell or complementary product campaigns

Product Page Viewers by Category

• Conditions: view_item AND item_category = 'Running Shoes'
• Membership duration: 21 days
• Use case: Category-specific remarketing

Predictive Audiences (Requires Sufficient Data)

GA4 offers machine-learning audiences available after your property collects 1,000 purchases and 1,000 non-purchase events:

Likely 7-day purchasers: Users ML predicts will purchase in the next 7 days

Likely 7-day churning purchasers: Past buyers likely to not repurchase

Predicted 28-day top spenders: Users predicted to have highest purchase value

These require ~6,000 returning users in the past 30 days to activate.

Audience Overlap Analysis

In GA4 Explorations → Segment overlap, compare:

• Paid traffic users vs Organic users vs Email subscribers
• See which combinations have the highest conversion rates
• Build audiences targeting the highest-overlap, highest-converting segments

Suppression Audiences

Don't just build audiences for targeting — build suppression lists:

• Recent purchasers (suppress from prospecting campaigns)
• Loyalty program members (serve different creative)
• Current customers (suppress from trial signup campaigns)

Add these as "Negative audiences" in Google Ads campaign settings.