A resource in WebDAV is any information, file or data that can be accessed through the WebDAV protocol. This includes web pages, documents, images, audio and video files, and any other type of digital asset that can be stored on a web server. Resources have unique Uniform Resource Identifiers (URIs) and can be accessed, created, or deleted using standard HTTP methods like GET, PUT, POST, or DELETE. WebDAV also supports advanced features like versioning, locking, and metadata management for these resources.