---
title: What are Durable Objects? · Cloudflare Learning Paths
lastUpdated: 2025-03-12T13:36:32.000Z
source_url:
  html: https://b0a7d8cd.preview.developers.cloudflare.com/learning-paths/durable-objects-course/series/what-are-durable-objects-2/index.md
  md: https://b0a7d8cd.preview.developers.cloudflare.com/learning-paths/durable-objects-course/series/what-are-durable-objects-2/
---

* Watch this episode

  In this video, we show how Durable Objects work and start building a video call app together.

  **Related content**

  For additional resources on learning Durable Objects with Cloudflare, refer to the following resources:

  * [Veet Github repository code](https://github.com/megaconfidence/veet)
  * [Cloudflare Durable Objects documentation](https://developers.cloudflare.com/durable-objects/)
  * [Cloudflare TURN service documentation](https://developers.cloudflare.com/realtime/turn/)
  * [CLI command for creating new Workers and Pages projects](https://developers.cloudflare.com/pages/get-started/c3/)
  * [Hopscotch.io for local WebSocket testing](https://hoppscotch.io/)
  * [Sign up for a Cloudflare account](https://dash.cloudflare.com/sign-up)

* Series overview

  [Watch Episode 1: Introduction to the series ](https://developers.cloudflare.com/learning-paths/durable-objects-course/series/introduction-to-series-1/)We present an overview of the series, discuss its underlying architecture, and access resources to set up the project locally.

  [Watch Episode 2: What are Durable Objects? ](https://developers.cloudflare.com/learning-paths/durable-objects-course/series/what-are-durable-objects-2/)We show how Durable Objects work and start building a video call app together.

  [Watch Episode 3: Create a serverless websocket 'backend' ](https://developers.cloudflare.com/learning-paths/durable-objects-course/series/serverless-websocket-backend-3/)We create a WebSocket backend using serverless technology, making the process simpler than ever before.

  [Watch Episode 4: Real-time messaging with WebSockets ](https://developers.cloudflare.com/learning-paths/durable-objects-course/series/real-time-messaging-with-websockets-4/)We learn how to route and broadcast incoming messages from WebSocket connections and implement error handling such as closed WebSocket connections.

  [Watch Episode 5: Build the app frontend and UI ](https://developers.cloudflare.com/learning-paths/durable-objects-course/series/build-the-app-frontend-5/)We configure the frontend starter code, connect to Durable Objects using a call room ID, and display a local video preview.

  [Watch Episode 6: Make and answer WebRTC calls ](https://developers.cloudflare.com/learning-paths/durable-objects-course/series/make-answer-webrtc-calls-6/)We expand the frontend functionality by adding functionality for making and answering WebRTC video calls.

  [Watch Episode 7: Deploy your video call app ](https://developers.cloudflare.com/learning-paths/durable-objects-course/series/deploy-your-video-call-app-7/)In this final episode, we configure the remaining functionalities. By the end, your app will be fully functional and ready for deployment.
