Web development is the work involved in developing a website for the Internet (World Wide Web) or an intranet (a private network). It can range from developing a simple single static page of plain text to complex web-based applications, electronic businesses, and social network services. Web development is a broad term for the work involved in developing a website 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-based applications, electronic businesses, and social network services. Web development is also known as website development.