In plain language
It lets the same logic handle a list of order items, recipients, records, or files one item at a time.
Example
A loop creates one fulfillment line for every product in an order payload.
Related terms
Action · Workflow · Rate Limit
Common misconception
A loop does not guarantee parallel or sequential execution, and it can multiply task usage and API requests unexpectedly.
Implementation guidance
Set a maximum collection size, preserve an item identifier, respect ordering needs and rate limits, and define partial-failure behavior.