HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Kong is an open-source API gateway and platform that acts as middleware between compute clients and the API-centric applications.
Next.js is a React framework for developing single page Javascript applications.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.