Dears,

Recently we decided to migrate our exchange 2010 SP1 to exchange 2013 VM's, I need to make PowerPoint presentation to show the plan before implementing, I have to show in my presentation my plan for example, show how is our current environment and next environment how to be, for example the best practices how many servers do we need? Do we need separate CAS servers or in same server, currently we have two physical exchange servers clustering, kindly any good idea and advice will be appreciate.

Thanks..

You need to obtain some ideas from different resources that would be helpful to understand all the required prerequisites and aspects in order to develop the presentation and show the same to boss. Few of them you can explore at below : http://www.msexchange.org/articles-tutorials/exchange-server-2013/migration-deployment/migrating-small-organization-exchange-2010-exchange-2013-part1.html

https://technet.microsoft.com/en-us/library/jj898583%28v=exchg.150%29.aspx

http://exchangeserverpro.com/exchange-2010-to-exchange-2013-migration/

And, http://www.petenetlive.com/KB/Article/0000788.htm

My personal suggestion would be to follow Exchange server deployment assistant that is available from Microsoft team. It covers and provides step-wise instructions by asking about your current environment.

Meanwhile, when you need to migrate users mailboxes from old server to upgraded one, You may also consider on LepideMigrator for Exchange tool that provides a hassle-free environment in order to get this job done with no downtime or any further interruption.