Azure is a cloud computing service for building, testing, deploying, and managing applications and services through Microsoft-managed data centers.
Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.
Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
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.