REST Web Service redirect

I have a web service designed in the REST architecture.

I want to have one end point for allowing the user to upload a picture.

I'm using AWS and I want to create the whole service in a way that one server is getting the requests and then (if needed) it will redirect to the relevant server for processing the request.

For example: Sending an HTTP Post request with a parameter containing a picture to: http://ift.tt/1AHDy18 will redirect the request to right server (or even directly to the right S3 path).

Just for clarification, the redirection is not the problem, but I want it to redirect the route before it receive the whole picture (for performance and time saving).

Is that possible?