Google Analytics Event & Custom Tracking

What is Google Analytics Event & Custom Tracking?

In GA4, everything is an event—pageviews, clicks, scrolls, purchases. Custom tracking means adding extra events (via GTM or code) to measure your unique business actions (e.g., video plays, form submits, coupon usage). This lets you go beyond default reports and analyze what really matters to your business.

Event Types in GA4:

• Automatically collected: page_view, session_start, first_visit.
• Enhanced measurement: scroll, outbound_click, file_download, video_start.
• Recommended events: purchase, sign_up, add_to_cart (with standard parameters).
• Custom events: Anything you define (e.g., “coupon_applied”, “chat_opened”).
• Parameters: Extra detail sent with events (e.g., product_id, video_length).

Key idea: Custom events turn GA4 from a generic tool into a business-specific insight engine.

Why it matters?

• Deeper insight: Measure actions default GA4 won’t show (form fills, interactions).
• Better optimization: Track micro-conversions that lead to revenue.
• Data quality: Clean, consistent events = reliable KPIs.

KPIQ Perspective

• User view: “I see traffic and purchases, but I don’t know what happens in between—are users interacting at all?”
• Technical view: KPIQ checks GA4 event coverage, flags missing key events (e.g., add_to_cart not firing), benchmarks engagement events across channels, runs what-ifs (e.g., +15% form_submit events → +X conversions), and detects inconsistent naming/parameters that break reports.

Actionable Insights

• ✅ In GA4, go to Configure → Events to see all tracked events.
• ✅ Use Google Tag Manager (GTM) to create custom events (e.g., form_submit, coupon_applied).
• ✅ Always add parameters (e.g., product_id, video_length) for detailed analysis.
• ✅ Standardize event naming → avoid duplicates (e.g., use “form_submit”, not “form1_submit”).
• ✅ Link events to Conversions in GA4 (mark key events like sign_up, purchase).

Practical Example

Scenario: You want to track how many users apply a coupon code during checkout.

Step 1: Create Event in GTM

Set up a trigger for the coupon field. Name event: coupon_applied. Send parameter: coupon_code.

Step 2: Check in GA4

In GA4, go to Configure → Events. Verify that coupon_applied appears with parameter coupon_code.

Step 3: Mark as Conversion

Go to Configure → Conversions and mark coupon_applied as a conversion.

Step 4: Interpret

Suppose 800 of 5,000 checkout sessions used a coupon → 16% coupon usage rate.

Step 5: What-if

If coupon usage rises to 25% due to a new promo, GA4 will show:

• +450 extra discounted orders
• At €40 AOV = +€18,000 influenced revenue