This is official Amazon Web Services (AWS) documentation for AWS Glue. AWS Glue is a fully managed ETL (extract, transform, and load) service that provides a simple and cost-effective way to categorize your data, clean it, enrich it, and move it reliably between various data stores. AWS Glue consists of a central metadata repository known as the AWS Glue Data Catalog, an ETL engine that automatically generates code, and a flexible scheduler that handles dependency resolution, job monitoring, and retries. This guide describes how you can use the AWS Glue console to discover your data, transform it, and make it available for search and querying. It also details how you can edit, debug, and test ETL code using a familiar development environment. This documentation is offered for free here as a Kindle book, or you can read it online or in PDF format at http://aws.amazon.com/documentation/glue/.