In order to find a good internship, I am engaged in answering these questions, There is one question which I am not clear what it says, I have never heard relevant information before, so I want to know What is progressive rendering?
Progressive rendering is the name given to techniques used to render content for display as quickly as possible.
It used to be much more prevalent in the days before broadband internet but it's still useful in modern development as mobile data connections are becoming increasingly popular (and unreliable!)
Examples of such techniques :