Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
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.
Typeform is a Spanish online software as a service (SaaS) company that specialises in online form building and online surveys.
Vercel is a cloud platform for static frontends and serverless functions.