When ByteSpeed sets up each school, we attach cloud storage to your AppStream environment. Schools can choose between either OneDrive or Google Drive and users will have the ability to save and open files/projects from their individual user accounts. ByteSpeed will take care of this during the initial setup.
Google Drive
https://docs.aws.amazon.com/appstream2/latest/developerguide/google-drive-end-user.html
OneDrive
https://docs.aws.amazon.com/appstream2/latest/developerguide/onedrive-end-user.html