Event Tracking

You might say

I want to know whether anyone actually clicks this button.

A record of a page action sent to an analytics tool when the action occursTo count clicks on Start trial, a developer can create a start_trial event in the click handler and add parameters such as the page source. A click means the event was triggered; analytics code must still send it and the platform must receive it before it appears in a debug or real-time view. A received event does not mean the aggregated report is complete.
Event Tracking
Further reading