Hi @Emeka Chukwukuba ,
The Exchange admin center (EAC) is the web-based management console in Exchange Server that replaces the Exchange Management Console (EMC) and Exchange Control Panel (ECP) in Exchange 2010.
You can use the Exchange Management Shell to perform every task that's available in the Exchange graphical management tools, plus things that you can't do there (for example, bulk operations). In fact, when you do something in the Exchange admin center (EAC), the Exchange Control Panel (ECP), or the Exchange Management Console (EMC), it's the Exchange Management Shell that does the work behind the scenes.
For more information, please refer to follow link:
Exchange admin center in Exchange Server | Microsoft Learn
Exchange Server PowerShell (Exchange Management Shell) | Microsoft Learn
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