Web development is the work involved in developing a Web site for the Internet (World Wide Web) or an intranet (a private network). Web development can range from developing a simple single static page of plain text to complex web applications, electronic businesses, and social network services. A more comprehensive list of tasks to which Web development commonly refers may include Web engineering, Web design, Web content development client liaison, client-side/server-side scripting, Web server, and network security configuration, and e-commerce development.