Polling and Iteration
Use these patterns when a Flow must revisit external state or process a paginated collection over time.
Problem and approach
Choose the control flow that matches the work:
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Backoff Polling retries an expected not-ready error with an exponential backoff.
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Polling with Timer waits on an explicit Timer before each readiness check.
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Iteration processes one page at a time and passes the next page token to the next Step input.
All three are durable loops: a completed Step either finishes the Flow or schedules its next execution.