In plain language
It watches for a defined change, message, schedule, or manual request and supplies the first data used by later steps.
Example
A “new form response” trigger starts a workflow whenever a customer submits an intake form.
Related terms
Action · Webhook · Workflow · Filter
Common misconception
A trigger is not always instant; polling triggers check periodically and may introduce delay.
Implementation guidance
Choose a narrow event, capture a durable event ID, document polling frequency, test duplicate delivery, and avoid updates that retrigger themselves.