CORS (Cross-Origin Resource Sharing) is a new specification which allow exchanged resources between the client and the server from different domain.
CORS is supported by most modern web browsers ( Firefox 3.5 and above, Safari 4 and above, Chrome 3 and above, IE 10 and above)
It allow the server to relax the cross-domain restrictions for all HTTP verbs, not only GET.
It removes limitation of JSONP (only support GET verb).
Source: MSDN | Asked In: Many Interviews |