HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
LiteSpeed is a high-scalability web server.
Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.
Silverstripe CMS is a free and open source Content Management System and Framework for creating and maintaining websites and web applications.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.