[Answered ]-Django server details

From this code – Django has built in WSGI Server which is used to serve the app when we use runserver. The server code can be found here. However this is not recommended to be used in production.

WSGI is a protocol, a standard. You can build your own web server which complies to this standard (like Django’s built in server). Or you can use one of the open source, production ready, mature and battle proven wsgi servers. Personally I like uwsgi.