HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Issuu is a digital discovery and publishing platform.
LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress.
PHP is a general-purpose scripting language used for web development.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.
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.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.