In this video, Lewis discusses modernizing ETL processes with an event-driven serverless data pipeline on AWS. He explains how to build a scalable, automated ETL pipeline using services like Amazon S3, AWS Glue, AWS Lambda, and Amazon EventBridge. The solution eliminates the need for managing infrastructure and enables event-driven processing, improving efficiency and cost-effectiveness. Lewis walks through the components of the pipeline, including data ingestion, cataloging, processing, and monitoring, demonstrating how AWS services can be integrated to create a powerful, serverless ETL solution.