Microsoft Active Server Page (ASP) is a server-side scripting technology that can be used to create dynamic and interactive Web applications. An ASP page is an HTML page that contains server-side scripts that are processed by a web server before being sent to the user’s browser. You can combine ASP with Extensible Markup Language (XML) and Hypertext Markup Language (HTML) to create powerful interactive Web sites.
ASP is a feature of the Microsoft Internet Information Server. Since the server-side script is building a regular HTML page, it can be served to almost any browser. An ASP file can be created by including a script written in VBScript or JScript in an HTML file.