Apache is a free and open-source cross-platform web server software.
PHP is a general-purpose scripting language used for web development.
Site Kit is a one-stop solution for WordPress users to use everything Google has to offer to make them successful on the web.
Unix is a family of multitasking, multiuser computer operating systems.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.