Integration Server 10.3 | Integration Server Administrator's Guide | Configuring the Server | Using CORS with Integration Server | How Integration Server Handles CORS Requests
 
How Integration Server Handles CORS Requests
Integration Server provides a set of extended settings to enable and configure processing of CORS requests. A CORS request contains a set of HTTP headers that can be used to identify the request and communicate with Integration Server. When support for CORS is enabled, Integration Server checks all incoming requests for these headers. If a request contains CORS headers, Integration Server attempts to validate the request. Integration Server processes valid requests and includes CORS response headers in the response.
Note:
To use CORS, both the server and the client must communicate with the CORS headers as defined by the CORS standard.