Hello All,

I need everyone's help on below issue

My company has forest Name called ABC.Com and  have sub companies like

A.ABC.Com -- Exchange 2007 Installed 

B.abc.com  -- Exchange 2010 Installed

Now company is planning to merge into single domain name space with only exchange 2013 version and others will be demoted after successful migrations of all active directory and exchange services

Hence I need some help to migrate entire AD Exchange multiple  domain environment to single domain single forest environment 

Hi,

You just need to migrate all the data from exchange 2007 to exchange 2013. And then from 2010 to 2013 .

and then you can dismount both exchange 2007 and 2010.

Hello ,

I didn't get your answer properly .. i meant what do u wanna suggest ?? what are the steps involved into this ?

could u pls elaborate on the same ???