Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
PHP is a general-purpose scripting language used for web development.
Polylang is a WordPress plugin which allows you to create multilingual WordPress site.
Twenty Nineteen is the default WordPress theme for 2019.
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.