Funky
Even though installing pre-requisites on Windows Server 2008 R2 is simple and straight forward as described here, it makes it even faster if you were to use a script to do so.
MVP Anderson Patricio recently published a script for the same. What the script did not do is what I took liberty to add. I am publishing entire script below with credit to Anderson where it is due.
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A while ago, fellow Exchange MVP Anderson Patricio released a script to help automate some of the tasks
I prefer more traditional