This seems like another article where they never define the acronym they use and expect everyone to have seen it already.
WebDAV (Web Distributed Authoring and Versioning) is a set of extensions to the Hypertext Transfer Protocol (HTTP), which allows user agents to collaboratively author contents directly in an HTTP web server by providing facilities for concurrency control and namespace operations, thus allowing the Web to be viewed as a writeable, collaborative medium and not just a read-only medium.[1] WebDAV is defined in RFC 4918 by a working group of the Internet Engineering Task Force (IETF).
WebDAV (Web Distributed Authoring and Versioning) is a set of extensions to the Hypertext Transfer Protocol (HTTP), which allows user agents to collaboratively author contents directly in an HTTP web server by providing facilities for concurrency control and namespace operations, thus allowing the Web to be viewed as a writeable, collaborative medium and not just a read-only medium.[1] WebDAV is defined in RFC 4918 by a working group of the Internet Engineering Task Force (IETF).
https://en.wikipedia.org/wiki/WebDAV