Record-triggered start events
Key Takeaway
Entry conditions and the When to Run the Flow for Updated Records setting control how often a record-triggered flow runs. The choice of a before-save or after-save flow controls what it is allowed to do.
A record-triggered flow starts on its own when someone creates, updates, or deletes a record in Salesforce. The flow's Start element defines this trigger, and its settings control how often the flow runs and what it is allowed to do.
The object and the kind of change
In the Start element, you first select the object to watch, which is the object of the triggering record. Then you choose whether the flow runs when a record is created, updated, or deleted. You can also set the flow to run when a record is created or updated.