This plugin integrates Upyun USS cloud storage as the primary location for media files on content management systems. It is designed for site administrators who want to offload attachment storage to improve performance and scalability. Key features include: Automatic file syncing to upload new media directly to cloud storage, local backup options to keep copies on your server if needed, historical attachment migration to transfer existing files to the cloud, custom domain support for using branded URLs with your storage, and multi-site compatibility for managing multiple installations. The plugin also offers image processing settings and file renaming during uploads for better organization.