Definition
A key event is a Google Analytics 4 event you've marked as important to your business, such as a purchase or lead. GA4 renamed “conversions” to “key events” in 2024.
Also called GA4 conversion
MegaMCP glossary32 terms
Explained
Key events can count once per event or once per session, and can carry a default value. Conversions used for Google Ads bidding are configured separately in Google Ads.
When asking an AI about GA4 performance, name the key event you mean; “conversions” can otherwise mean every key event added together.