Have you worked on any cloud architecture designs, particularly for basic S3 ETL purposes?

For an S3‑based ETL pipeline I designed a serverless architecture: S3 event triggers invoke Lambda functions that perform data transformation. The transformed data is stored in another S3 bucket, and Glue crawlers catalog the data for Athena queries. I used Step Functions to orchestrate multi‑step workflows, including error handling and retries. IAM roles enforce least privilege, and VPC endpoints keep traffic within AWS. I added CloudWatch metrics and SNS alerts for monitoring. This design scales automatically, reduces operational overhead, and keeps costs low.