LEMP Stack is a combination of free, open source software. The acronym LEMP refers to the first letters of Linux (Operating system), Nginx Server, MySQL (database software), and PHP, PERL or Python, principal components to build a viable general purpose web server. 

For installation steps, click on the link 

https://wiki.crowncloud.net/?How_to_Install_LEMP_Stack_on_Ubuntu_22_04