Wei Yun is a branch of cloud computing, which refers to some applications of cloud computing in a local area, and provides many functions, such as file transmission, storage, privacy protection, multi-terminal viewing, downloading and sharing files, file management, online preview of multi-format files, intelligent backup of photos, image recognition, online editing of documents, automatic storage in the cloud, collaborative editing by multiple people, instant synchronization of multiple terminals, version history recovery, and document security protection.

Wei Yun is a cloud storage service launched by Tencent, which can synchronize files, push photos and transmit data between mobile phones and computers.