Summary
The article provides a Google Tag Manager tip to always add the 'event' key to dataLayer push commands. This is because each Tag requires a Trigger, and each Trigger needs an Event condition to activate. Without the 'event' key, Tags can't be fired. This is particularly important in Enhanced Ecommerce. The article also reveals that 'event' key can be added to pre-container-snippet pushes, enabling Tags to fire before the Pageview event.