HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
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.
Prismic is a headless CMS for Jamstack.
React is an open-source JavaScript library for building user interfaces or UI components.
Vercel is a cloud platform for static frontends and serverless functions.