asp-classic Tutorial

Active Server Pages (ASP), also known as Classic ASP or ASP Classic, was Microsoft’s first server-side script-engine for dynamically-generated web pages. The introduction of ASP.NET led to use of the term Classic ASP for the original technology.

The default server-side scripting language for ASP is VBScript. The generated pages are meant to be viewed in a browser, so they usually use HTML markup and CSS styling.

1 ASP is not installed by default on these versions of IIS. You need to go into the server manager features and add ASP.
See Classic ASP Not Installed by Default on IIS 7.0 and above