I have been working with jQuery and AJAX for a few weeks now and I saw two different ways to 'continue' the script once the call has been made: success: and .done.

From the synopsis from the jQuery documentation we get:

.done(): Description: Add handlers to be called when the Deferred object is resolved.
success: (.ajax() option): A function to be called if the request succeeds.

So, both do something after the AJAX call has been completed/resolved. Can I use one or the other randomly? What is the difference and when one is used instead of the other?