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 ## For 'step-04', 'step-05', 'step-06'
 
-Run `npm install` before running the code.
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+Run `npm install` before running the code.
+
+## Frequently Asked Questions
+
+### Can I use WebRTC in PHP, Python or other backend languages?
+Yes. While this Codelab is built using Node.js in order to [enable signaling](https://www.html5rocks.com/en/tutorials/webrtc/infrastructure/) between peers, [WebRTC](https://webrtc.org) is a web API that can be used in any web server or backend.
+
+There are several repositories on GitHub built in [PHP](https://github.com/search?l=php&q=webrtc&type=Repositories) or [Python](https://github.com/search?l=Python&q=webrtc&type=Repositories) that can help you get started.
+
+### Can I run a WebRTC app from a remote server?
+Yes. WebRTC is a web API which is intended to be used in a real server. However, note that in order for WebRTC to work, you will need to serve over HTTPS and have your own [signaling system](https://www.html5rocks.com/en/tutorials/webrtc/infrastructure/).
+
+### Can this codelab be hosted on a server?
+The objective of this codelab is to show and teach how WebRTC works. As a result, the code is not thought or intended to be directly hosted in a server or production environment.
+
+However, you can use the base code to get you started. From there, you would need to get at least the [following relevant changes](https://github.com/googlecodelabs/webrtc-web/issues/70):
+
+1. Migrate from HTTP to HTTPS. [Read more](https://github.com/googlecodelabs/webrtc-web/issues/48).
+1. Enabling [signaling using STUN and TURN servers](https://www.html5rocks.com/en/tutorials/webrtc/infrastructure/) to ensure peers can connect using your service.
+1. Rewriting some of the signaling code to ensure that communication only happens across the right peers instead of broadcasting to all connected peers.
+
+### Can we have more than two peers connected using WebRTC?
+Yes. The codelab is limitting to two peers per room; but WebRTC can handle multiple connections.  You can see a [live demo](https://webrtc.github.io/samples/src/content/peerconnection/multiple/) on the WebRTC samples ([code](https://github.com/webrtc/samples/tree/gh-pages/src/content/peerconnection/multiple)).
+
+If you are trying to modify the codelab to support multiple peers per room, you can read the instructions on [this issue](https://github.com/googlecodelabs/webrtc-web/issues/72).
+
+### Is WebRTC only used for video conferencing?
+No, WebRTC can be used for all sorts of Real-Time Communications; including messages or files. You can see more applications on the [WebRTC samples](https://github.com/webrtc/samples).