I need to take requests to firstdomain.com/example/foo/bar and serve up content from seconddomain.com/example/foo/bar but I want the end user to still see firstdomain.com/example/foo/bar in their browser. That rules out a 301/302 redirect. I thought URL-rewrite would do the trick, but that has to be same domain. I think ARR is what I need. So, I've installed ARR v3.0 and rebooted my server. Now that ARR v3.0 is installed, how do I go about configuring it to perform the desired request routing?
I should note seconddomain.com is a 3rd party hosted server, whereas firstdomain.com is hosted on a server on our network.