LAMP is a software infrastructure for web applications
LAMP is an open source platform for web development. LAMP is an abbreviation made from the combined use of programs based on Linux, which creates dynamic websites. LAMP is a software infrastructure for the development and execution of web applications, which consists of the following components. The individual letters stand for the components used: Linux (operating system), Apache (web server), MySQL (database) and PHP (programming language). Because the platform is made up of four different layers, it is also called the LAMP Stack. These stacks can be implemented on different operating systems. If one uses Windows instead of Linux as an operating system, it is called WAMP (or XAMPP). It is called MAMP under Mac OS and SAMP under Solaris.
LAMP is a composition of different components
The exact composition of the LAMP package can vary in other ways, especially if the software is used to develop web applications. This lets PHP be replaced by Perl or Python. Apache, which is used in LAMP, is the most popular web server in the world with a market share of more than 50%. The MySQL database is on third place of the most widely used database systems. The programming language PHP is on fourth place of the TIOBE programming language overview and is therefore widely used. All three technologies are free software (open source) and therefore free to use. Most Linus distributions use the components mentioned above, often compiled, preconfigured and documented for a combination so that a workable system can be quickly set up.
You can find more information on LAMP on Wikipedia: https://en.wikipedia.org/wiki/LAMP_(software_bundle)