All in One SEO plugin optimizes WordPress website and its content for search engines.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
W3 Total Cache (W3TC) improves the SEO and increases website performance and reducing load times by leveraging features like content delivery network (CDN) integration and the latest best practices.
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.
WPML plugin makes it possible to build and run fully multilingual WordPress sites.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.