Web development is a term for the work involved in developing a web site for the Internet or an intranet.
Mobile application development is a process by which application software is developed for handheld devices.
E-commerce is trading in products or services using computer networks, such as the Internet.
Web design encompasses many different skills and disciplines in the production and maintenance of websites.
Application Development is used for developing large software.
SEO is the process of affecting the visibility of a website or a web page in a search engine's.