AMAZON'S EXABYTE-SCALE MIGRATION FROM APACHE SPARK TO RAY ON AMAZON EC2

Summary from the TLDR Web Dev newsletter

Amazon's Business Data Technologies (BDT) team is migrating from Apache Spark to Ray for large-scale data processing to reduce costs and improve efficiency. The migration was driven by the need to address scaling and performance issues with their existing Apache Spark compactor. The migration itself involved rigorous testing and validation to ensure data quality and reliability.