Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.

Apache is a free and open-source cross-platform web server software.

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

Performance plugin from the WordPress Performance Team, which makes internationalization/localization in WordPress faster than ever before.

Performance plugin from the WordPress Performance Team, which optimizes embeds by lazy loading them only as they come into view.

Performance plugin from the WordPress Performance Team, which optimizes the loading of images which are the LCP (Largest Contentful Paint) element, including both img elements and elements with CSS background images.

Performance plugin from the WordPress Performance Team, which captures real user metrics about what elements are displayed on the page across a variety of device form factors (e.g. desktop, tablet, and phone) in order to apply loading optimizations.

Performance plugin from the WordPress Performance Team, which offloads JavaScript execution to a Web Worker, improving performance by freeing up the main thread.

Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.

Performance plugin from the WordPress Performance Team, which adds support for the Speculation Rules API, by which certain URLs are dynamically prefetched or prerendered based on user interaction.

MySQL is an open-source relational database management system.

Performance plugin from the WordPress Performance Team, which improves image sizes attribute accuracy and implements the HTML spec for adding sizes='auto' to lazy loaded images.

Performance plugin from the WordPress Performance Team, which determines and stores the dominant color for newly uploaded images in the media library, then uses that as a placeholder background during front end image loads.

PHP is a general-purpose scripting language used for web development.

jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.

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.

Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.

Performance plugin from the WordPress Performance Team, which is a collection of standalone performance modules.