HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Sulu is the go-to CMS for back-end projects written within the PHP Symfony framework.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.