In software engineering, a web application or webapp [1] is an application that is accessed via web browser over a network such as the Internet or an intranet. It is also a computer software application that is coded in a browser-supported language (such as HTML, JavaScript, Java, etc.) and,Simply  A web application is a set of web pages that are generated in response to user

requests.

• To run a web application, the client requires a web browser and the server requires

web server software. The server may also require a database management system,

or DBMS.

• Hypertext Markup Language, or HTML, is the language that the browser converts

into the user interface, while Hypertext Transfer Protocol (or HTTP) is the protocol

that web browsers and web servers use to communicate.

• A web browser requests a page from a web server by sending an HTTP request. A

web server replies by sending an HTTP response back to the browser.