| Feature | Amazon Data Firehouse | AWS Glue | Amazon EMR | AWS Batch |
|---|---|---|---|---|
| Processing Type | Stream Processing | Stream & Batch Processing | Batch Processing | Batch Processing |
| Serverless | ✅ Yes | ✅ Yes | ❌ No, runs on Amazon EC2 instances | ✅ Yes |
| Underlying Tech | AWS-Proprietary | Apache Spark | Apache Hadoop components like Spark, HBase, Hive etc. | |
| Supports custom script? | Yes, through Lambda | ✅ Yes | ✅ Yes |