In this tutorial we will show you how to install ExpressionEngine on Debian 8. ExpressionEngine is a content management system which is written in object-oriented PHP and is using MySQL for data storage. Although ExpressionEngine is a commercial product, it has a free “core” version available for personal and non-profit websites. According to the company that created ExpressionEngine (EllisLab), currently thousands of web sites are powered using ExpressionEngine, from business sites, to online magazines, to personal blogs. Sites that are built with ExpressionEngine use a number of custom channels, usually each containing a number of different fields. Channels typically represent different types of information, so you might have a channel for single pages, blog posts, products, job vacancies, and so on.