Stage is a feature in Singlestore Helios that enables users to load files into a staging area attached to every Workspace Group, simplifying the process of getting data into the database. With Stage, loading local files can be done quickly and efficiently, and it also supports schema inference, which speeds up the creation of tables and pipeline mapping. Additionally, users can export query results from SinglestoreDB into Stage, allowing them to share data with other users or download large result files locally. The feature is designed to help users quickly get their data into SinglestoreDB, making it easier to work with data in the database.