HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Ibexa DXP is an open-source enterprise PHP content management system (CMS) and Digital Experience Platform (DXP) developed by the company Ibexa (known previously as eZ Systems).
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.
Varnish is a reverse caching proxy.