URL (uniform resource locator) is a website address.
An absolute URL typically takes the following form: protocol://domain/path.
The protocol is usually http (hypertext transfer protocol), but can also be https (http secure), ftp (file transfer protocol) or file.
The domain is the name of the website. (For example, the domain name of Indiana University’s central web server is www.indiana.edu. The domain of this website is marketing-dictionary.org)
The path includes directory and file information. You must use absolute URLs when referring to links on different servers.