Craft CMS is a content management system for building bespoke websites.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
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.
SEOmatic facilitates modern SEO best practices & implementation for Craft CMS 3.
Unpkg is a content delivery network for everything on npm.