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.
Taboola is a content discovery & native advertising platform for publishers and advertisers.
Usercentrics is a SaaS enterprise solution for Consent Management (CMP) that helps enterprise customers to obtain, manage and document the user consent.
Varnish is a reverse caching proxy.