The transition to the microsoft cloud is not to be taken lightly. The planning
and processes involved in transitioning from an established infrastructure to a cloud environment is a major undertaking and will be able to save money after moving to Microsoft Office 365. Microsoft is encouraging organizations of all sizes to begin migrating
operations to the cloud when Microsoft Office 365 becomes available, and is doing its best to help smooth the process. Microsoft Office 365 is made up of cloud versions of Microsoft Exchange Server 2010, SharePoint 2010 and Microsoft Lync Server. Some Office
365 subscriptions will also include access to Microsoft Office Professional Plus, as well as the Microsoft Office Web Apps.
Here are the steps to start with. Microsoft EHLO team do have improvements coming in Exchange Server 2010 SP2 that will simplify the process of O365 migration..till then, this is the option.
Once the assessment is done, you have to start correcting your active directory, DNS and mailbox restrictions. Active Directory must have certain settings configured in order to work properly with single sign-on. In particular, the user principal name (UPN),
also known as a user logon name, must be set up in a specific way for each user.
Depending on each of your domains, you may need to do the following:
Before commiting the migration, once admin/user should know the limits of O365..read
Step by step actions: