ExpertMedium1 markMultiple Choice
AWS SAA-C03 · Question 26 · Domain 2.3: Decoupling Mechanisms
An e-commerce application has a complex order fulfillment process involving payment processing, inventory updates, and shipping notifications. If any step fails, the system must execute compensating transactions to rollback previous steps. Which service is BEST suited to orchestrate this workflow?
An e-commerce application has a complex order fulfillment process involving payment processing, inventory updates, and shipping notifications. If any step fails, the system must execute compensating transactions to rollback previous steps. Which service is BEST suited to orchestrate this workflow?
Answer options:
A.
Amazon SQS
B.
AWS Step Functions
C.
Amazon EventBridge
D.
AWS Lambda
How to approach this question
Look for 'complex workflow', 'orchestrate', and 'compensating transactions'. This is the primary use case for Step Functions.
Full Answer
B.AWS Step Functions✓ Correct
AWS Step Functions
AWS Step Functions lets you coordinate multiple AWS services into serverless workflows. It maintains application state, tracking exactly which step your workflow is in, and handles errors with built-in retry and fallback mechanisms (compensating transactions).
Common mistakes
Choosing SQS, which only queues messages and cannot manage workflow state.
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