Delving deeper into the Exchange admin center interface is possible by selecting the Exchange option under Admin Centers in the left hand menu. This will open a new tab within your browser and provide you with much more granular access to the interface. The following screenshot shows you the intricacies of the Exchange admin center interface:

While a great many features and functions are available through the web-based exchange admin interface, a lot of functions are only available through PowerShell which will be covered later in the book.
From within the Recipients section of Exchange Online management, you have the ability to:
Modify properties of user mailboxes
Create room mailboxes (for example, meeting rooms)
Create shared mailboxes
Create distribution groups or mail enabled security groups
Manage external contacts
Perform mailbox migrations from Exchange 2007, 2003, 2010, 2013, 2016, and IMAP mail systems