We have an Exchange 2010 server with 75 user CAL's.
We are adding several dozen more users soon, and will need additional CALs.... but I would rather get the new CAL's for Exchange 2013. (So when we upgrade the the server we won't need to re-purchase those CALs)
I know 2012 Server CAL's cover you for 2008 server, but I can't find any documentation on Microsofts website that the Exchange 2013 CAL's will have me in compliance with an Exchange 2010 server.
Does anyone know if that documentation exists?