cdnjs is a free distributed JS library delivery service.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
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.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Typed.js is a library that types. It is designed to create typewriter-style animations with ease.
Vercel is a cloud platform for static frontends and serverless functions.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.