Google Analytics 4 (GA4)
Google Analytics 4 (GA4) is Google's analytics platform built on an event-based data model, where every interaction is recorded as an event with parameters. It measures user behavior across websites and apps and replaces the older Universal Analytics.
In depth
Unlike the session-and-pageview model of Universal Analytics, GA4 treats everything as an event: page_view, scroll, a custom quiz_complete, or a purchase, each carrying parameters such as value or category. This flexible structure lets you define conversions that match your funnel rather than forcing your funnel into rigid goal types. GA4 also leans on modeling and a privacy-centric design, blending observed and modeled data to fill gaps left by consent and cookie limits, and it integrates tightly with Google Ads for audience and bidding signals.
For lead qualification, GA4 lets you mark meaningful steps, such as quiz start, quiz complete, and lead submitted, as key events and segment them by source, medium, and campaign. The common pitfall is leaving the default setup and never defining custom events, which yields generic traffic charts but no insight into which campaigns produce qualified leads. Configuring a clean event taxonomy, marking the right key events, and passing a lead score parameter turns GA4 from a vanity dashboard into a decision tool.
Example in practice
Frequently asked questions
How is GA4 different from Universal Analytics?
GA4 uses an event-based model where every interaction is an event, while Universal Analytics was built on sessions and pageviews. GA4 also emphasizes cross-platform measurement, modeling, and privacy controls.
Can GA4 track my quiz funnel conversions?
Yes. You can send custom events such as quiz_complete and lead_submitted, mark them as key events, and segment by campaign to see which sources produce qualified leads.
Do I need Google Tag Manager to use GA4?
No, but it helps. GTM makes it far easier to send custom events and parameters to GA4 without code changes, which is why many teams pair the two together.