HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
The lite-youtube-embed technique renders the YouTube video inside the IFRAME tag only when the play button in clicked thus improving the core web vitals score of your website.
Spotify Widgets provide an embeddable view of a track, artist, album, user, playlist, podcast or episode for use within your web project.
Vercel is a cloud platform for static frontends and serverless functions.