WebDAV (Web-based distributed authoring and versioning) is an open standard for preparing data in the internet. With it, users can access their data as they would on an online hard drive. Technically speaking, WebDAV is an expansion of the protocol HTTP/1.1, that removes certain restrictions from HTTP. Until now, online forms have for the most part only offered the ability to upload single files (HTTP-POST). With WebDAV entire directories can be transferred.