What You'll Be Tested On
- Pipeline orchestration with Step Functions, MWAA (Airflow), and Glue workflows
- Monitoring with CloudWatch metrics, alarms, logs, and Glue job run insights
- Data quality with Glue Data Quality, validation rules, and testing strategies
- Query optimization with Athena workgroups, Redshift WLM, and indexing
- Data visualization and BI with Amazon QuickSight
- Troubleshooting failed Glue jobs, Kinesis throughput, and EMR cluster issues
Key AWS Services in This Domain
Exam Tips for Domain 3
Step Functions is preferred for simple linear or branching workflows; MWAA (Airflow) is better for complex DAG-based scheduling with dependencies.
CloudWatch Logs and Glue job run metrics are key to diagnosing ETL failures.
Redshift WLM queues let you prioritize critical queries over ad hoc workloads.
Partition pruning, columnar formats, and compression are the top Athena cost optimizations.
Practice Domain 3 Questions
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