CGI vs WSGI vs ASGI

CGI is a standard in which a web server and a application communicate. It is slow, because it starts a new process every time it gets a request from a client.

 

WSGI is another standard. It is faster than CGI, because a living process deals with the requests from clients.

 

ASGI is the latest one. It is compatible with WSGI work, and it can deal the requests from clients asynchronously.