WebDAV (Web Distributed Authoring and Versioning) is an extension of the HTTP protocol that allows users to remotely manage and edit files on web servers. It allows for file management and manipulation, such as creating, moving, copying, and deleting files and directories, as well as supporting version control and collaboration. WebDAV enables different types of applications to share common files and data by using a uniform and familiar interface. It is commonly used for content management systems, document management, and collaborative authoring among teams.