V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

WEBDAV
       Web Distributed Authoring and Versioning (WWW, HTTP, RFC 2518),
"webDAV"


The Free On-line Dictionary of Computing (30 December 2018):

Web Distributed Authoring and Versioning
WebDAV

    (WebDAV) An extension of the Hypertext Transfer
   Protocol (HTTP) that allows clients to perform remote web
   content authoring operations such as creating, editing or
   moving documents.

   (2018-08-08)