AWS Certified Data Engineer – Associate (DEA-C01) — Question 81

A company uses Amazon EMR as an extract, transform, and load (ETL) pipeline to transform data that comes from multiple sources. A data engineer must orchestrate the pipeline to maximize performance.

Which AWS service will meet this requirement MOST cost effectively?

Answer options

• A. Amazon EventBridge
• B. Amazon Managed Workflows for Apache Airflow (Amazon MWAA)
• C. AWS Step Functions
• D. AWS Glue Workflows

Correct answer: C

Explanation

AWS Step Functions provide a serverless way to coordinate distributed applications and microservices. They are designed for high performance and cost efficiency, making them ideal for orchestrating ETL pipelines. Options B and D, while useful for workflow management, may incur higher costs and complexity compared to using Step Functions in this scenario.