AWS Glue is a serverless data integration service from Amazon Web Services for discovering, preparing, moving and combining data for analytics, machine learning and application development. It provides a central Data Catalog with crawlers that infer schemas, visual and code-based authoring of ETL and ELT jobs on Apache Spark, streaming data processing, job scheduling and workflows, and features for data quality and sensitive-data detection. You work through the console, API or CLI; AWS manages the infrastructure.
AWS Glue is operated by Amazon Web Services, a US company, and exists only as a managed service, not as software you can host yourself. Its ETL jobs do use open-source Apache Spark. The service is available in many AWS regions, including several in the EU such as Frankfurt, Ireland, Paris, Milan, Spain and Stockholm, as well as US and Asia Pacific regions. Choosing an EU region determines where the service runs, but as a US provider AWS remains subject to US law, including the CLOUD Act. European organisations should weigh this.