Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
Mailchimp is a marketing automation platform and email marketing service.
Modernizr is a JavaScript library that detects the features available in a user's browser.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
WP Rocket is a caching and performance optimisation plugin to improve the loading speed of WordPress websites.