CORS defines a way in which a browser and server can interact to determine safely whether or not to allow the cross-origin request. CORS provides for more flexibility than same-origin requests, but is more secure than simply permitting all cross-origin requests.
When creating an integration in ICS, you can now configure the REST connection for CORS.
Great video on YouTube, covering ICS responding to EBS Business Events. The example shown leverages the new Orchestration pattern in ICS and shows how powerful this actually is. I mean, not only in respect of EBS but also Fusion ERP and HCM.