Build a Video Chat App with ASP.NET Core and Angular using Twilio Video

A Twilio tutorial demonstrates how to build a multi-party video chat application using an ASP.NET Core Web API and an Angular single-page application, avoiding the need to operate media servers directly. The backend securely stores Twilio credentials, locally signs short-lived Video access tokens, queries Twilio’s REST API for active rooms and connected participants, and uses a SignalR hub to notify clients when room membership changes. The Angular frontend uses the Twilio Video SDK to request camera and microphone permissions, let users select devices, join named rooms, render local and remote media tracks, and leave calls, while a SignalR-backed service keeps the active-room list updated without polling. The tutorial covers local setup with .NET, Node.js, Angular CLI, Twilio API keys, development proxy and CORS configuration, testing calls in two browser tabs, and a production workflow that compiles the Angular app into the ASP.NET Core application's static-file directory so both components can be deployed as one application.

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