AngularJS is a popular JavaScript framework for building client-side applications, allowing for well-factored apps with clear Separation of Concerns (SoC). To demonstrate its capabilities, this tutorial converts an existing JavaScript Quickstart for Video into an Angular application. A Twilio account must be created and set up with an API Key, Secret, and Configuration Profile SID to authenticate with the Twilio Video service. The client-side code is converted from the existing JavaScript Quickstart to use Angular, allowing for a working video chat application to be built.