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Use tool which is most comfortable for you.<br />
Creating users by powershell is most preferable, because you can configure user parameters as you want.
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I'm currently using Exchange 2007 and working on upgrading to Exchange 2013. &nbsp;In the older 2007 version I remember reading somewhere that it would be better to create users in AD Users and Computers first and then go to the Exchange Management Console and create their mailbox. &nbsp;<br />
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In Exchange 2013, is this process really needed anymore? &nbsp;Or is it safe to just create new user accounts with mailboxes using the Exchange Admin Center?
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I'm currently using Exchange 2007 and working on upgrading to Exchange 2013.  In the older 2007 version I remember reading somewhere that it would be better to create users in AD Users and Computers first and then go to the Exchange Management Console and create their mailbox.  

In Exchange 2013, is this process really needed anymore?  Or is it safe to just create new user accounts with mailboxes using the Exchange Admin Center?

Use tool which is most comfortable for you.
Creating users by powershell is most preferable, because you can configure user parameters as you want.

MS Exchange 2013 - creating new user accounts in Exchange EAC or AD Users and Computers

I&#39;m currently using Exchange 2007 and working on upgrading to Exchange 2013.  In the older 2007 version I remember reading somewhere that it would be better to create users in AD Users and Computers first and then go to the Exchange Management Console and create their mailbox.  

In Exchange 2013, is this process really needed anymore?  Or is it safe to just create new user accounts with mailboxes using the Exchange Admin Center?

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.