ga4-audience-builder

GA4 Audience Builder Guide

Complete guide for building powerful custom audiences in Google Analytics 4 for remarketing and analysis.

Quick Decision Tree

GA4 AUDIENCE BUILDER FLOW
│
├─► WHICH TYPE OF AUDIENCE?
│   ├─► Behavior-based
│   │   └─► Use events + parameters
│   │       └─► Example: "Users who viewed product but did not purchase"
│   │
│   ├─► User Property based
│   │   └─► Demographics, lifetime value, acquisition
│   │       └─► Example: "High-value customers (LTV > €500)"
│   │
│   ├─► Sequential (Journey)
│   │   └─► Steps in order
│   │       └─► Example: "Homepage → Category → Product → NO Purchase"
│   │
│   └─► Predictive (ML)
│       └─► See: ga4-predictive-audiences skill
│
├─► MEMBERSHIP DURATION?
│   ├─► Short (1-7 days)
│   │   └─► Cart abandoners, recent visitors
│   │
│   ├─► Medium (8-30 days)
│   │   └─► Product interest, engaged users
│   │
│   └─► Long (30-540 days)
│       └─► Customer loyalty, seasonal shoppers
│
└─► EXPORT NEEDED?
    ├─► Google Ads remarketing
    │   └─► See: ga4-remarketing-setup skill
    │
    └─► GA4 analysis only
        └─► No export configuration needed

Audience Types Overview

GA4 AUDIENCE TYPES
===================

┌───────────────────┬────────────────────────────────────────────────────┐
│ Type              │ Use Case                                           │
├───────────────────┼────────────────────────────────────────────────────┤
│ Static Conditions │ Simple if/then rules                               │
│                   │ "Users with event X"                               │
├───────────────────┼────────────────────────────────────────────────────┤
│ Dynamic           │ Real-time membership updates                       │
│                   │ "Users who purchased last week"                    │
├───────────────────┼────────────────────────────────────────────────────┤
│ Sequential        │ Ordered steps (THEN/FOLLOWED BY)                   │
│                   │ "Viewed product → Added to cart → Did NOT buy"     │
├───────────────────┼────────────────────────────────────────────────────┤
│ Exclusion         │ Exclude certain users                              │
│                   │ "All visitors EXCEPT converters"                   │
├───────────────────┼────────────────────────────────────────────────────┤
│ Predictive        │ ML-based (purchase/churn probability)              │
│                   │ "Likely 7-day purchasers"                          │
└───────────────────┴────────────────────────────────────────────────────┘

Creating an Audience: Step by Step

Step 1: Navigate to Audience Builder

LOCATION: Admin → Property → Audiences → New audience

OPTIONS AT CREATION:
┌────────────────────────┬────────────────────────────────────────────┐
│ Option                 │ When to Use                                │
├────────────────────────┼────────────────────────────────────────────┤
│ Create a custom        │ Full control, custom conditions            │
│ audience               │ (Recommended for specific use cases)       │
├────────────────────────┼────────────────────────────────────────────┤
│ Use a reference        │ Start with GA4 template                   │
│ (Suggested audiences)  │ (Good for inspiration)                    │
├────────────────────────┼────────────────────────────────────────────┤
│ Create audience from   │ Start from existing Exploration           │
│ exploration            │ (Handy for analysis → action)             │
└────────────────────────┴────────────────────────────────────────────┘

Step 2: Configure Conditions

AUDIENCE CONDITIONS
====================

CONDITION TYPES:
────────────────
├── Include users when: (AND/OR logic)
│   ├── Event (event_name = X)
│   ├── Event parameter (event_param = Y)
│   ├── User property (user_property = Z)
│   ├── First user (acquisition source/medium)
│   └── Device/Geo (platform, country, city)
│
└── Exclude users when: (Filter OUT)
    └── Same options as include

AVAILABLE OPERATORS:
┌─────────────────────┬────────────────────────────────────────────────┐
│ Operator            │ Example                                        │
├─────────────────────┼────────────────────────────────────────────────┤
│ equals              │ event_name = purchase                          │
├─────────────────────┼────────────────────────────────────────────────┤
│ does not equal      │ page_location != /thank-you                    │
├─────────────────────┼────────────────────────────────────────────────┤
│ contains            │ page_title contains "Product"                  │
├─────────────────────┼────────────────────────────────────────────────┤
│ begins with         │ page_path begins with /shop/                   │
├─────────────────────┼────────────────────────────────────────────────┤
│ ends with           │ page_path ends with /checkout                  │
├─────────────────────┼────────────────────────────────────────────────┤
│ matches regex       │ page_path matches regex ^/product/[0-9]+$      │
├─────────────────────┼────────────────────────────────────────────────┤
│ > / < / >= / <=     │ ltv > 100 (for numeric values)                 │
├─────────────────────┼────────────────────────────────────────────────┤
│ in list             │ country in list [NL, BE, DE]                   │
└─────────────────────┴────────────────────────────────────────────────┘

Step 3: Configure Scoping

AUDIENCE SCOPING
=================

WHAT IS SCOPING:
├── Determines at which level conditions are evaluated
├── Critical for correct audience definition
└── Wrong scoping = wrong users in audience

SCOPE LEVELS:
┌─────────────────┬────────────────────────────────────────────────────┐
│ Scope           │ Meaning                                            │
├─────────────────┼────────────────────────────────────────────────────┤
│ Across all      │ Condition ever true within membership window       │
│ sessions        │ "User did this at any point in the last X days"    │
│                 │ └─► MOST COMMONLY USED scope                       │
├─────────────────┼────────────────────────────────────────────────────┤
│ Within same     │ Condition true within a single session             │
│ session         │ "User did this in the same session"                │
│                 │ └─► For session-specific journeys                  │
├─────────────────┼────────────────────────────────────────────────────┤
│ Within same     │ Condition true within a single event               │
│ event           │ "This event had these parameters"                  │
│                 │ └─► For specific event combinations                │
└─────────────────┴────────────────────────────────────────────────────┘

EXAMPLE OF THE DIFFERENCE:
───────────────────────────
"User viewed product AND added to cart"

Across all sessions:
└─► User who ever viewed a product AND ever added something
    (Could be different products!)

Within same session:
└─► User who viewed a product AND added to cart in the SAME session
    (More relevant for cart abandonment)

Within same event:
└─► Not logical for this example (2 events)

Step 4: Membership Duration

MEMBERSHIP DURATION SETTINGS
==============================

WHAT IT IS:
├── How long user stays in audience after last qualifying action
├── Max 540 days (Google Ads limit)
└── Choose based on customer journey and campaign goal

RECOMMENDATIONS PER USE CASE:
┌─────────────────────────┬────────────┬─────────────────────────────────┐
│ Use Case                │ Duration   │ Reason                          │
├─────────────────────────┼────────────┼─────────────────────────────────┤
│ Cart abandonment        │ 7-14 days  │ Short purchase intent window    │
├─────────────────────────┼────────────┼─────────────────────────────────┤
│ Product viewers         │ 14-30 days │ Medium interest window          │
├─────────────────────────┼────────────┼─────────────────────────────────┤
│ Recent customers        │ 30-90 days │ Cross-sell/upsell window        │
├─────────────────────────┼────────────┼─────────────────────────────────┤
│ All customers           │ 180-540 d  │ Longer loyalty period           │
├─────────────────────────┼────────────┼─────────────────────────────────┤
│ Seasonal shoppers       │ 365 days   │ Seasonal re-activation          │
├─────────────────────────┼────────────┼─────────────────────────────────┤
│ High-value customers    │ 540 days   │ Maximum retention for VIPs      │
└─────────────────────────┴────────────┴─────────────────────────────────┘

IMPORTANT:
├── Shorter duration = more relevant targeting
├── Longer duration = larger audience size
├── Google Ads has max 540 days
└── Choose based on average sales cycle

Sequential Audiences

SEQUENTIAL AUDIENCES
=====================

WHAT IT IS:
├── Audiences based on order of actions
├── Use "is followed by" or "is indirectly followed by"
└── Perfect for customer journey targeting

SYNTAX:
────────
Step 1: [First condition]
        │
        ├─► is followed by (directly next action)
        │   └─► "Immediately after"
        │
        └─► is indirectly followed by (somewhere later)
            └─► "At some point after"
        │
Step 2: [Second condition]
        │
        ├─► (repeat for more steps)
        │
Step N: [Final condition]

EXAMPLE: CART ABANDONERS (SEQUENTIAL)
──────────────────────────────────────
Step 1: event_name = view_item
        is indirectly followed by
Step 2: event_name = add_to_cart
        AND EXCLUDE
Step 3: event_name = purchase

Meaning: "Users who viewed a product, then added to cart,
         but did NOT purchase"

EXAMPLE: CHECKOUT ABANDONERS
─────────────────────────────
Step 1: event_name = begin_checkout
        is indirectly followed by
Step 2: event_name = add_payment_info
        AND EXCLUDE
Step 3: event_name = purchase

Meaning: "Users who started checkout, entered payment info,
         but did not complete"

TIME CONSTRAINTS:
─────────────────
├── "within X time" - Step must follow within X time
│   └─► Example: add_to_cart within 30 minutes of view_item
│
└── Without constraint - Anytime in membership window

Practical Audience Templates

AUDIENCE TEMPLATES FOR ADVERTISERS
====================================

1. HIGH-INTENT NON-CONVERTERS
─────────────────────────────
Name: "High Intent - No Purchase"
Conditions:
├── Include: event_name = add_to_cart (count >= 2)
├── Include: session_duration > 180 (3+ minutes)
└── Exclude: event_name = purchase
Duration: 14 days
Use case: High purchase intent, needs extra push

2. RECENT CUSTOMERS (CROSS-SELL)
────────────────────────────────
Name: "Recent Buyers - 30 Days"
Conditions:
├── Include: event_name = purchase
└── Timeframe: Last 30 days
Duration: 30 days
Use case: Cross-sell campaigns

3. HIGH-VALUE CUSTOMERS
────────────────────────
Name: "VIP Customers LTV 500+"
Conditions:
├── Include: LTV (user property) > 500
└── Or: purchase value sum > 500
Duration: 540 days
Use case: VIP treatment, loyalty campaigns

4. ENGAGED NON-CONVERTERS
──────────────────────────
Name: "Engaged Visitors - No Purchase"
Conditions:
├── Include: session_count >= 3
├── Include: page_views >= 10
└── Exclude: event_name = purchase
Duration: 30 days
Use case: Retargeting engaged browsers

5. CATEGORY INTEREST
─────────────────────
Name: "[Category] Viewers"
Conditions:
├── Include: page_path contains /category/[name]/
├── Or: item_category = [name]
└── Exclude: event_name = purchase (optional)
Duration: 14 days
Use case: Category-specific remarketing

6. LAPSED CUSTOMERS
────────────────────
Name: "Lapsed Customers 90+ Days"
Conditions:
├── Include: event_name = purchase
├── Timeframe: 90-365 days ago (NOT last 90 days)
└── Exclude: purchase in last 90 days
Duration: 275 days
Use case: Win-back campaigns

7. EMAIL SUBSCRIBERS NON-BUYERS
────────────────────────────────
Name: "Newsletter - No Purchase"
Conditions:
├── Include: event_name = sign_up OR newsletter_subscribe
└── Exclude: event_name = purchase
Duration: 90 days
Use case: Email subscriber conversion

Best Practices

DO's ✅
═══════
├── Use clear, descriptive audience names
│   └─► "Cart_Abandon_14d_ExclPurchase" vs "Audience 1"
│
├── Document audience logic in description
│   └─► Add explanation of why these conditions
│
├── Start with broader audiences, narrow down later
│   └─► Too specific = too few users
│
├── Test audience size before activation
│   └─► <1000 users = possibly too small for Google Ads
│
├── Use exclusions to prevent overlap
│   └─► Exclude converters from prospecting audiences
│
├── Combine with Predictive Audiences
│   └─► "Likely Purchasers" + "Cart Abandoners" = High priority
│
└── Review audiences monthly
    └─► Remove inactive/small audiences

DON'Ts
═══════
├── Create too many audiences (>50 becomes unmanageable)
│   └─► Focus on 10-20 core audiences
│
├── Create audiences without a clear campaign goal
│   └─► First: what do I want to achieve? Then: which audience?
│
├── Forget to add exclusions
│   └─► Retargeting converters with prospecting ads
│
├── Set too short membership duration for long sales cycles
│   └─► B2B: 30-90 days, not 7 days
│
├── Build on only one data point
│   └─► Combine multiple signals for better targeting
│
└── Never review audiences on performance
    └─► Poor ROAS? Adjust or pause audience

Troubleshooting

TROUBLESHOOTING GUIDE
======================

PROBLEM: Audience size = 0
───────────────────────────
Causes:
├── Conditions too restrictive
├── Event does not exist or is misspelled
├── Timeframe too short
├── Data not yet processed
└── Wrong scoping

Solution:
├── Check event/parameter names in DebugView
├── Broaden conditions (fewer AND, more OR)
├── Wait 24-48 hours for data processing
├── Use Exploration to count users first
└── Test each condition separately

PROBLEM: Audience not available in Google Ads
──────────────────────────────────────────────
Causes:
├── Google Ads link not active
├── "Enable personalized ads" not on
├── Audience too small (<1000 users)
├── Not yet synchronized (24-48 hours)
└── Policy violation (sensitive categories)

Solution:
├── Check Admin → Product Links → Google Ads
├── Verify "Personalized advertising" toggle
├── Wait for sufficient audience volume
├── Check Google Ads policy compliance
└── Verify Google Signals is enabled

PROBLEM: Audience is not growing
─────────────────────────────────
Causes:
├── Events are not being triggered
├── Filters too restrictive
├── Consent mode blocking users
└── Membership duration too short

Solution:
├── Verify event tracking in DebugView
├── Review and broaden conditions
├── Check consent rates
├── Extend membership duration

PROBLEM: Too much overlap between audiences
────────────────────────────────────────────
Causes:
├── No exclusions configured
├── Conditions not mutually exclusive
└── Audience hierarchy not thought through

Solution:
├── Create exclusion audiences
├── Use "AND NOT" conditions
├── Design audience architecture with tiers
└── Prioritize: converters → high-intent → general

Output: Audience Builder Recommendation Template

# GA4 Audience Recommendation

## Audience Overview
- **Name:** [Audience name]
- **Goal:** [Remarketing/Analysis/Export]
- **Expected size:** [Estimate]
- **Membership duration:** [X days]

## Audience Configuration

### Include Conditions
| # | Type | Condition | Scope |
|---|------|-----------|-------|
| 1 | Event | [event_name = X] | [Across all sessions] |
| 2 | Parameter | [param = Y] | [Within same event] |
| 3 | User Property | [property = Z] | [Across all sessions] |

### Exclude Conditions
| # | Type | Condition | Reason |
|---|------|-----------|--------|
| 1 | Event | [event_name = purchase] | Exclude converters |

### Sequential Steps (if applicable)

Step 1: [First action] │ is indirectly followed by Step 2: [Second action] │ AND EXCLUDE Step 3: [Action to exclude]

## Export Configuration
- **Google Ads:** [Yes/No]
- **Display & Video 360:** [Yes/No]
- **Search Ads 360:** [Yes/No]

## Campaign Use Cases
1. [First campaign type - description]
2. [Second campaign type - description]
3. [Third campaign type - description]

## Monitoring
- **Review frequency:** [Weekly/Monthly]
- **KPIs:** [Audience size, Conversion rate, ROAS]
- **Alerts:** [If size <X or >Y]

## Notes
[Any additional remarks or context]

Optional: Enrich with Live Data

If the user has connected their GA4 account, pull segment sizes to validate audience eligibility before building:

# Check user counts per key segment to estimate audience sizes
ga4_run_report(
    property_id="YOUR_PROPERTY_ID",
    metrics=["totalUsers", "sessions"],
    dimensions=["sessionDefaultChannelGroup"],
    start_date="30daysAgo",
    end_date="today"
)

Use this to check if there are enough users in each segment to meet platform minimums (Google Ads: 1,000 users, Meta: 100). Small segments need broader definitions or longer lookback windows.