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Workflows / States

Pass Workflows

Pass states act as the lightweight utility layer of a Step Functions workflow, allowing you to transform, shape, and route data without performing any external work. This collection of workflows demonstrates how Pass states are used to inject static values, restructure payloads, and prepare inputs for downstream states using Parameters, Result, and JSONPath mappings. You will see how they simplify complex data flows, enable clean handoffs between states, and support testing or debugging by simulating outputs. While simple on the surface, these examples show how Pass states play a critical role in keeping workflows organized, predictable, and easy to maintain.

25 workflows

Adverse Event Reporting

Clinical Trial Data

Handles the detection and escalation of adverse events in a clinical trial. It validates the sample, enforces a brief Wait to allow upstream systems to settle, then runs concurrent safety and eligibility checks using a Parallel state before notifying investigators or triggering a critical alert.

Order Cancellation

Vehicle Order Fulfillment

Handles the end-to-end cancellation of a previously placed vehicle order. It validates cancellation eligibility, enforces a brief cooling-off Wait period to allow in-flight production and finance operations to settle, then runs concurrent inventory and credit reversal checks using a Parallel state before releasing the order or failing the cancellation with a structured error.

Manufacturing Defect Escalation

Launch Vehicle Manufacturing

Escalation workflow for components that fail initial inspection or structural testing. Re-validates the manufacturing order, enforces a hold Wait for root-cause analysis, runs parallel re-inspection and structural re-testing in a Parallel state, then either certifies the reworked component or issues a formal non-conformance report.

Express Quality Gate Check

Launch Vehicle Manufacturing

Express quality gate check for incoming components. Validates the manufacturing order traceability and immediately runs dimensional and surface acceptance inspection, returning a real-time pass or hold decision to the production line.

Transaction Reversal

Credit Card Transactions

This workflow handles the end-to-end reversal of a previously processed credit card transaction. It validates reversal eligibility, enforces a short cooling-off Wait period to allow in-flight settlements to complete, then runs concurrent fraud and balance checks using a Parallel state before restoring funds or failing the reversal with a structured error.

Express Authorization

Credit Card Transactions

This workflow processes an array of credit card transactions concurrently using a Map state, with a maximum concurrency of 3. Each item in the batch is independently validated, enriched, and screened for fraud and balance eligibility in parallel branches before being authorized or rejected.

Credit Card Transaction Processing

Credit Card Transactions

This workflow models a complete end to end credit card transaction pipeline using AWS Step Functions. It includes input validation, data enrichment, fraud analysis, balance checks, fund reservation, and final ledger posting.