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Microsoft Office 365: Exchange Online Implementation and Migration by Loryan Strant, David Greve

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Basic infrastructure preparation

To simplify our approach, let's start with a basic source Exchange 2010 environment. A diagram showing the scope of the requirements is as follows:

Basic infrastructure preparation

Let's focus on the necessary requirements for the following components:

  • Directory Synchronization server
  • Active Directory Federation Services
  • Exchange Hybrid server

Directory Synchronization server

Only one Directory Synchronization server can be actively used within a single Office 365 subscription. The following are the base requirements for this server:

  • 32-bit deployment — Windows Server 2003 SP2 or Windows Server 2008
  • 64-bit deployment — Windows Server 2008 Standard or Windows ...

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