What is WebDav Client Protocol and How is it used

FTP is an obsolete and outdated protocol.
Anyone using FTP should seriously consider using WebDAV.

Using WebDAV (Web Distributed Authoring and Versioning), users can group-edit and organize files located on servers.

Basically it’s like using FTP but through HTTP

I know it sounds confusing but here is a comment left on my website that explains better:

Since DAV works over HTTP, you get all the benefits of HTTP that FTP cannot provide. For example: strong authentication, encryption, proxy support, and caching. It is true that you can get some of this through SSH, but the HTTP infrastructure is much more widely deployed than SSH. Further, SSH does not have the wide complement of tools, development libraries, and applications that HTTP does.

DAV transfers (well, HTTP transfers) are also more efficient than http://FTP. You can pipeline multiple transfers through a single TCP connection, where as FTP requires a new connection for each file transferred (plus the control connection).

You do not need a client if using Windows or Mac since a client is integrated into the operating system.

Do a Google search for BarracudaDrive, which is an easy to use WebDAV server.