http://wccftech.com/google-launches-drive-file-stream/

Google launched Backup and Sync back in July for regular consumers as it replaced Google Drive for Mac/PC. Meanwhile, Google was working on a standalone client for fulfilling all the business requirements. Today, after months of testing, the tech giant has finally launched the Drive File Stream desktop app for Enterprise G Suite users.

Drive File Stream is quite different from Backup and Sync as it does not save data locally. Instead, it streams the data on-demand – including My Drive and Team Drives. Users can still browse the stored files in the Drive File Stream through their native file browser – Finder (for Mac) and Explorer (for Windows), but files only get downloaded when you open them. It means that these files stay in your local file browser, but you will still need download them and then view.