cdnjs is a free distributed JS library delivery service.
Cloudways offers managed cloud-hosting services for WordPress sites on a cloud server where multiple copies of your content will be replicated throughout your chosen data center.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
MathJax is a cross-browser JavaScript library that displays mathematical notation in web browsers, using MathML, LaTeX and ASCIIMathML markup.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
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.