What is the difference between GA4 and Universal Analytics?

Universal Analytics measured sessions — groups of hits within a time window. GA4 measures events — every individual user interaction (page view, click, form submission) is recorded separately. GA4 also introduces 'engaged sessions' to replace bounce rate, provides better cross-device tracking, and has built-in privacy features. Universal Analytics was shut down in July 2024.

What is an engaged session in GA4?

An engaged session in GA4 is one that lasted more than 10 seconds, included 2 or more page views, or triggered a conversion event. Engagement rate (engaged sessions divided by total sessions) replaces the old bounce rate metric and is a fairer measure of content quality — users who read an article and leave after 45 seconds are no longer counted as bounces.

How do I track WhatsApp button clicks as conversions in GA4?

Use Google Tag Manager to create a click trigger that fires when your WhatsApp button is clicked. Configure a GA4 Event tag that sends a custom event (e.g. 'whatsapp_click') to your GA4 property. Then in GA4 Admin → Events, mark that event as a conversion. This lets you see how many visitors click your WhatsApp button and which traffic sources drive the most WhatsApp enquiries.

Google Analytics 4 Guide: Essential GA4 Setup for Small Businesses

What Is GA4?

Google Analytics 4 (GA4) is Google's current web and app analytics platform. Universal Analytics was fully shut down in July 2024 — all sites now use GA4.

The biggest difference from Universal Analytics: GA4 measures events, not sessions. In UA, every page visit was recorded as a "session." In GA4, every user interaction — page view, button click, form submission, video play — is recorded as a separate event. This gives you more flexible and more granular data about what users actually do on your site.

Setup: First Checks

For GA4 to work, your site's <head> needs either a Google Tag Manager container or a direct gtag.js snippet. To verify it's collecting data:

Open GA4 and go to Reports → Realtime
Open your site in a separate tab
If you see an active user appear in the Realtime report, tracking is working

Connect Search Console: GA4 Admin → Product links → Search Console. This connection lets you see which search queries are driving traffic to your site — directly inside GA4. It's essential for SEO monitoring and shouldn't be skipped.

Key Reports: What's Where

Acquisition

Shows where your visitors come from:

Organic search — from Google/Bing
Direct — users who typed your URL directly
Social — from Instagram, LinkedIn, etc.
Referral — clicks from links on other sites

Track organic search traffic over time to measure the impact of your SEO work. A steady increase in organic sessions is the clearest signal that SEO is producing results.

Engagement

One of GA4's most useful improvements: the engaged session concept. A session is counted as "engaged" if it meets at least one of these conditions:

Lasted more than 10 seconds
Included 2 or more page views
Triggered a conversion event

The old UA "bounce rate" is replaced by engagement rate (engaged sessions ÷ total sessions). It's a fairer measure — a user who reads your article for 45 seconds and leaves is no longer counted as a bounce.

Pages and Screens

Reports → Engagement → Pages and screens. Shows which pages get the most views, how long users spend on each, and engagement rates per page. Use this to identify which blog articles are driving traffic and which service pages are underperforming.

User Demographics

Country, city, device type (mobile/desktop), browser. If your mobile traffic share is high but your mobile Core Web Vitals scores are poor, that's a direct, prioritised action item.

Conversion Tracking: The Most Important Setup

A conversion is any user action that has business value: form submission, phone number click, WhatsApp button tap, reaching a thank-you page, downloading a file.

For Formspree contact forms: If you redirect to a thank-you page (e.g. /thank-you/) after submission, mark that page view as a conversion in GA4 → Admin → Events → mark event as conversion.

For WhatsApp button clicks: Use Google Tag Manager to capture button click events and send them to GA4 as custom events, then mark those as conversions. For Turkish businesses, this is often the highest-volume conversion touchpoint.

GA4 without conversion tracking shows you traffic data but can't tell you whether that traffic is producing business results. Set up at least one conversion event.

Metrics That Matter

Metric	What It Means	Benchmark
Users	Unique visitors	Look for growth over time
Engagement rate	Engaged sessions ÷ total sessions	50%+ is healthy
Average engagement time	Actual time spent on page	Varies by content type
Organic traffic	Sessions from search	Monthly growth is the goal
Conversion rate	Conversions ÷ visitors	1–3% is typical for most sites

GA4 and SEO: How They Work Together

GA4 is the tool that connects SEO activity to business outcomes. "Organic traffic increased" is useful — "organic traffic increased and produced 12 contact form submissions last month" is actionable.

With Search Console connected, you can see which keywords drive traffic, whether that traffic engages with your content, and whether it converts. This data tells you which pages to improve, which topics to expand, and where your SEO investment is actually paying off.

Common Mistakes

Not filtering internal traffic. Your own visits and your agency's visits will inflate data. Set up an internal traffic filter: GA4 Admin → Data streams → Configure tag settings → Define internal traffic. Add your office IP address.

No conversions defined. If you can only report on sessions and page views, you're missing the business layer. Define at least one conversion.

Only looking at totals. Always segment: mobile vs. desktop, organic vs. direct. Problems hide in the averages — a page with a 20% engagement rate on desktop and 5% on mobile has a specific, fixable mobile problem.

Google Analytics 4 Guide: Essential Setup for Small Businesses