Windows, Apache, MySQL, PHP (PERL, Python) is commonly termes as WAMP. It is a combination of applications provided by web to be used on Microsoft Windows operating system and the web environments with server stack. It is a web development environment, in which Apache, MySQL and scripting language form an open source environment.
Wamp provides four different elements of web servers to the administratores and developers. An operating system, web server, scripting language, and a database.
Windows OS provides the applications to be executed, Apache acts as the web server, MySQL is for data base handling. The scripting languages may be PERL, PHP, or Python.
Apache is for server side for handling HTTP requests to the clients and from the client browsers. MySQL stores all data of website. The scripts are in the form of HTML webpages.