Definition: The word 'httpd_2_debian' refers to a specific software update or version of Apache, also known as httpd (HTTP daemon). This update was released in 2014 to fix an issue with its compatibility with Debian-based web servers. It brought support for Python and PHP, which were the most commonly used server-side languages at that time. The term 'httpd_2_debian' is often associated with newer versions of Apache, especially those developed by the Debian project.