This is a doublon of this post.
But since this post was answered, windows server 2012 R2 was released, and SP2013 SP1 (re)release.
We are about to set up a new SP environment for intra/extra net.
And wondering if it's the best way to choose 2012 R2 for our WebApplication Servers, and also for our SQL Server. SQL 2012 server on a 2012 r2 is a good idea ? Or is it too risky. Same for SP2013.