If you're migrating from Universal Analytics, read this migration guide instead.
The data you see in your reports comes from events that trigger as users interact with your website and/or app. For example, a
page_view event triggers when a user views a page on your site.
You can collect the following events without you adding code:
- Automatically collected events
Automatically collected events are collected automatically when you set up data collection.
- Enhanced measurement events
- Recommended events
Recommended events are events that you implement, but have predefined names and parameters. Recommended events unlock existing and future reporting capabilities.
- Custom events
Custom events are events that you name and implement. Only create custom events if the events in the other categories don't work for your use case. Custom events don't show up in most standard reports. You need to set up custom reports for meaningful analysis. To create custom events in the web interface, see Modify and create events via the user interface. To create events for a mobile app, see Log events.
Event names are case-sensitive; two events whose names differ only in case will result in two distinct events.