How to create a new mailbox in Exchange 2016 with PowerShell
Creating a new user using powershell & ecp portal in Exchange 2016.
New-Mailbox -Name "First LastName" -UserPrincipalName " Name@domainName" -Password (ConvertTo-String -SecureString " " -asPlainText -Force) -Alias " '" -FirstName " " -LastName " " -DisplayName "First Lastname" -OrganizationalUnit "Your OU"