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What is Google Analytics 4 (GA4)? Measurement and conversions
Google Analytics 4 is Google's audience measurement platform, built on an event model rather than page-centric sessions like Universal Analytics. GA4 records interactions (page views, clicks, purchases, downloads) and lets you define conversions, funnels, and audiences for marketing, SEO, and CRO—while honoring cookie consent requirements in Quebec and Canada.
In one sentence
GA4 tracks who visits your site, what they do, and which actions count as conversions.
Key points
- Everything is an event: page_view, click, purchase, generate_lead, etc.
- Conversions are events flagged as business goals.
- Attribution and insights help prioritize channels.
- Consent Mode and Law 25 banners affect data completeness.
Term at a glance
- Google Analytics 4
- GA4 · Google Analytics
- English term
- Google Analytics 4
- Domain
- Digital marketing
- Category
- Measurement
- Level
- Beginner to intermediate
GA4 vs legacy Google Analytics
Universal Analytics focused on sessions and pages; GA4 unifies web and app, models cross-device journeys, and encourages BigQuery for deep analysis. For SMEs the urgent task is rebuilding conversions—forms, phone clicks, Shopify purchases—or dashboards show traffic disconnected from revenue.
Implementation uses gtag.js or Google Tag Manager with a data layer describing business events. In Quebec, without analytics consent GA4 under-counts; documenting setup in your privacy policy is part of deployment.
GA4 complements Search Console and Ads: Search Console shows queries and impressions; GA4 shows post-click behavior. Linking both stops optimizing keywords that never convert.
How to deploy GA4 well
- 01
Create property and streams
GA4 property, Web stream, enable Enhanced measurement where useful.
- 02
Define key events
Mark generate_lead, purchase, or custom quote events as conversions in Admin.
- 03
Tag via GTM or gtag
Send value, CAD currency, item_id for e-commerce and qualified leads.
- 04
Link Ads, Search Console, BigQuery
Import Ads conversions, link Search Console, optional BigQuery export as you scale.
A concrete GA4 example
A Saint-Laurent metal fabricator finds in GA4 that 62% of quote conversions come from organic traffic on three technical pages while leadership over-spent on LinkedIn Ads. Shifting budget to SEO content and CRO on those pages—monthly GA4 funnel reviews—raises qualified leads 40% in a quarter, tracked via generate_lead, not social likes.
What is GA4 used for?
Measure campaigns
UTMs plus conversions to compare Ads, email, partners.
CRO funnels
Form or checkout drop-off by device and language.
Remarketing audiences
Export segments to Google Ads with ad storage consent.
Benefits and limits of GA4
- Free for most SMEs
- Native Google integrations
- Flexible event model
- Visual explorations without SQL
- Learning curve vs UA
- Modeling gaps when consent denied
- Misconfiguration misleads decisions
- Not a CRM replacement for complex B2B revenue
GA4 vs Google Search Console
| Google Analytics 4 | Search Console | |
|---|---|---|
| Question answered | What do visitors do on-site? | How does Google see the site in Search? |
| Key data | Sessions, events, conversions, revenue | Impressions, clicks, queries, index coverage |
| Primary users | Marketing, product, leadership | SEO, developers, content |
| Together | Validates SEO traffic quality | Surfaces keyword opportunities |
Why GA4 for Quebec organizations
Without shared measurement, teams argue opinions. GA4—properly configured and consent-aware—gives a common baseline in French and English (language segments). It is the minimum to arbitrate SEO, CRO, and media with numbers.
Frequently asked questions
Is GA4 free?
Yes for most sites; GA360 serves very high volume enterprise needs.
Do I need Google Tag Manager?
Recommended to manage tags without redeploys; direct gtag works for simple setups.
Law 25 and consent?
Use a CMP plus Consent Mode; do not load GA4 before analytics consent if policy requires it.
Why don't conversions match CRM?
Double firing, bots, bad triggers, attribution lag—triangulate GA4, CRM, server logs.
Does GA4 replace SEO audits?
No. GA4 is post-click behavior; Search Console and technical audits cover search visibility.
Related terms
Sources and references
GA4 shows traffic but unreliable conversions? We audit tags, events, and business alignment.
Fix your measurement