Active Server Pages abbreviated as ASP, is a server-side scripting environment developed by Microsoft. Using ASP, we can create and run dynamic and interactive web server applications. With ASP, we can combine HTML pages, script commands, and COM components to create interactive Web pages or powerful Web-based applications, which are easy to develop and modify. ASP program runs inside IIS (Internet Information Services).

An ASP file has file extension “.asp”. It is just the same as an HTML file which can contain xml, text, html and scripts. Scripts in the file are executed on server.

When a browser requests an ASP page, the web server interprets any ASP scripts within the web page and sends the produced HTML to the browser.