Web applications are increasingly standard HTML pages dynamically generated on the server, usually from a database. ASP does exactly this on Windows NT. Since ASP only runs on Windows NT & IIS web server, sites that run on the freeware Apache server have been limited to Perl/CGI which is single-threaded. This means that it every request to the server creates a new process, allocating memory space and using processor time. Single-threaded apps put high loads on the server and are less scalable. Java, like ASP, is multi-threaded so that each request runs in the same memory and process space, leading to less server load. Now web server developers can use Java on the server that is scalable and server independent. Java provides technologies to allow for server side processing (servlets), dynamic content generation (servlets, beans) and dynamic presentation (Java Server Pages).