Glue is a managed service designed to simplify data preparation tasks, providing the capabilities to perform ETL operations such as data categorization, cleaning, and transformation into different formats before being loaded into data storage systems. Kinesis is more oriented towards real-time streaming data processing and does not inherently transform data into new formats. Batch is a service for batch computing workloads and does not focus on the ETL process. Redshift is primarily a data warehousing service capable of analyzing large datasets but is not a dedicated ETL service.