Why is IT Hit WebDAV Server Engine useful for creating WebDAV server?
Creating WebDAV server require significant web development experience. Without IT Hit WebDAV Server Engine you will need to study RFC 2518 and while developing catch web requests with Microsoft Network Monitor (or similar utility) to understand problems. Moreover most likely you will be using Microsoft WebDAV Client (Web Folders) and Microsoft Office applications to access your server. Microsoft WebDAV Client and Microsoft Office applications are not fully compatible with RFC 2518, so it will require additional programming.