GCP Professional Data Engineer Practice Question

Cloud Composer is Google Cloud's fully managed service for Apache Airflow. Because it runs the open-source Airflow engine, existing DAG files can be migrated with minimal change, and the workflow definition remains portable to any other environment that supports Airflow, satisfying the requirement to avoid vendor lock-in. Composer also provides native scheduling, dependency management, and retry capabilities. Cloud Scheduler is limited to single-job cron scheduling. Workflows uses a proprietary YAML-based language and is not Airflow-compatible, requiring significant refactoring. Cloud Data Fusion focuses on GUI-driven ETL pipelines built on CDAP rather than executing arbitrary Airflow DAGs, so it would not meet the stated portability goal.