Cowboy is a small, fast, modular HTTP server written in Erlang.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
Heroku is a cloud platform as a service (PaaS) supporting several programming languages.
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.