Event (Analytics)
AnalyticsAlso: GA4 event · analytics event · tracking event
Quick definition
In GA4, an event is any interaction a user has with your website or app that you want to track. Page views, button clicks, form submissions, video plays and purchases are all events. GA4 is event-based, meaning everything is an event — replacing the session-based model of Universal Analytics.
Where it shows up in the data
Events GA4 tracks without configuration: page_view, session_start, first_visit, user_engagement. These fire on every GA4 installation automatically.
Optional events that GA4 can collect with a toggle (no code needed): scrolls, outbound clicks, site search, video engagement, file downloads. Enable in GA4 > Data Streams > Enhanced Measurement.
Events you define and implement via Google Tag Manager or gtag.js code. These capture business-specific actions: quote_requested, product_compared, checkout_step_completed.
Additional data attached to an event. When a purchase event fires, parameters include transaction_id, value, currency, items array. Parameters transform binary events into rich, queryable data.
What it actually means
GA4 replaced Universal Analytics's session-and-pageview data model with a pure event model. In Universal Analytics, a 'visit' was the primary unit of data. In GA4, every interaction — whether a page load, a scroll, a button click or a purchase — is an event with the same data structure. This makes GA4 more flexible (any action can be tracked the same way) but also more dependent on proper configuration (automatic tracking covers only a fraction of what you need).
In GA4, everything is an event. The quality of your data is the quality of your event implementation.
How it shows up
Events appear in GA4 under Reports > Engagement > Events. In the Events report you can see count and parameters for each event type. Custom dimensions must be registered in GA4 Admin > Custom definitions before they appear in reports. Google Tag Manager Preview mode lets you test events before publishing — always test before going live.
The Australian context
The Universal Analytics to GA4 migration deadline was July 2023. Most AU businesses have made the switch, but many have incomplete implementations — particularly ecommerce tracking and custom conversion events. AU agencies that specialise in GA4 implementation are in high demand as the market catches up. Verify your GA4 implementation covers your full conversion funnel before making budgeting decisions based on its data.
Where people get this wrong
Related terms
Common questions
What is the difference between an event and a goal in GA4?
In GA4, there are no 'goals' in the Universal Analytics sense. Events are the base data type; marking an event as a 'conversion' in GA4 is the equivalent of setting a goal. Any event can be marked as a conversion in GA4 Admin > Events by toggling the 'Mark as conversion' switch.
How do I see all events firing on my site?
Use GA4 DebugView (Admin > DebugView) while browsing your site with the GA4 Debugger Chrome extension enabled. This shows events in real time as they fire. Alternatively, use Google Tag Manager Preview mode, which shows all GTM tags and triggers as you navigate your site.
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About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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