Google Analytics 4 is the current version of Google analytics, built around events rather than the pageview/session model of the old Universal Analytics. It is designed for how people actually use the web today — across devices and platforms.
The mental shift: UA counted sessions on pages. GA4 counts events from users. Data is more flexible, and privacy is built in.
What to set up first
A good setup prevents a month of bad data.
- Install GA4 with the consent mode for your region.
- Configure conversions for the actions that matter: purchases, signups, leads.
- Link Google Search Console and Google Ads.
- Define your audiences for remarketing.
The reports worth checking
Most GA4 reports distract. Start with these.
- Realtime: is traffic happening now?
- Acquisition: where do users come from?
- Engagement: which pages keep people?
- Conversions: which channels actually deliver?
Stop reading the session counter and start reading conversions by channel. That single report tells you where to invest.
The privacy reality
GA4 uses modeled data and event-based tracking to remain accurate without full cookies. Numbers will differ from the old tool — that is expected, not a bug.
GA4 FAQ
Why is GA4 so different from Universal Analytics?
It was rebuilt for event-based, privacy-aware, cross-device measurement. The old model could not survive the cookie changes.
Do I need to understand reports?
Start with the reports above. As you grow, learn the exploration reports for deeper questions.