The event model, in one section
Using Google Analytics 4 for SEO means living in a handful of GA4 reports rather than the whole interface: landing pages, engagement, and the key events you defined yourself.
The single thing worth understanding before you open GA4 is that it records events, not sessions. Universal Analytics organized everything around pageviews grouped into visits; GA4 records each interaction as an event with parameters attached (page_view, scroll, click, file_download, form_submit) and builds the reports on top of that stream.
This is why familiar metrics moved or vanished. Bounce rate is gone, replaced by engagement rate, which counts the opposite: the share of sessions that lasted, scrolled or converted. Once you accept that everything is an event, the interface stops feeling arbitrary and starts feeling merely verbose.
Set these three things up on day one
- Data retention to 14 months. Admin → Data settings → Data retention. It does not apply retroactively, so every day on the default is a day lost.
- Link Search Console. Admin → Product links. Query data and behavior data in one place.
- Define one key event. A form submit, a booking, an outbound affiliate click. Without it, GA4 reports activity but never outcomes.
Those three take fifteen minutes and are the difference between a property that answers questions in a year and one that just accumulated numbers.
The retention default is the most expensive click in GA4
Retention windows can default to as little as two months, and changing the setting later does not recover what was already discarded. Most small sites discover this the first time they try a year-on-year comparison and find nothing there.
Two minutes in Admin, today, prevents it permanently.

