
AWS Glue
AWS Glue is a fully managed, serverless ETL platform from AWS that automates data discovery, cataloging, and transformation using the Glue Data Catalog and Apache Spark (PySpark/Scala).
- Serverless architecture—no infrastructure to manage; AWS automatically provisions compute (Spark-based)
- Glue Data Catalog provides schema discovery, metadata storage, versioning, and integration with Athena and Redshift Spectrum
- Supports Python (PySpark) and Scala for complex ETL with transformation APIs
- Deep integration with AWS services including CloudWatch, IAM, S3 events, Step Functions, and Redshift
- Costs can be unpredictable for long-running or resource-intensive jobs due to DPU billing
- Debugging jobs can be challenging; logs spread across CloudWatch and Spark outputs
- Connecting on-prem or multi-cloud sources often requires additional networking configuration
