Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
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.
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.