I have a client that has 20 users and has Windows 2008R2 server with a mix of XP Professional and Windows 7 professional clients.
They would like me to propose a solution to have Microsoft exchange installed.
I am thinking that they will need
Windows 2012 server
Exchange 2013 server
Will there be any concerns or considerations to introduce these 2 servers in the domain and will there be any problems supporting the Windows XP workstations?
Would it be possible to install SBS and have the existing 2008R2 server co-exist?
I would like suggestions taking into account cost as well as stability.
Thanks in advance.