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Step Functions on AWS is best characterised as:
AA managed file system mountable by EC2 instances
BA serverless workflow orchestrator that coordinates Lambda functions and other AWS services into state machines with retries, error handling, and parallelism
CA relational database with strong consistency guarantees
DAn always-on Kubernetes control plane managed by AWS
Answer & Solution
Correct answer: B. A serverless workflow orchestrator that coordinates Lambda functions and other AWS services into state machines with retries, error handling, and parallelism
Step Functions defines workflows as JSON state machines with built-in retry, catch, parallel, and choice states — orchestrating Lambda / Glue / SageMaker / ECS / EKS / API calls. The other options describe unrelated services.
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