You have an Azure Active Directory (Azure AD) tenant named contoso.onmicrosoft.com.
You hire a temporary vendor. The vendor uses a Microsoft account that has a sign-in of email@example.com.
You need to ensure that the vendor can authenticate to the tenant by using firstname.lastname@example.org.
What should you do?
UserPrincipalName - contains the UserPrincipalName (UPN) of this user. The UPN is what the user will use when they sign in into Azure AD. The common structure is @, so for Abby Brown in Contoso.com, the UPN would be AbbyB@contoso.com
To create the user, call the New-AzureADUser cmdlet with the parameter values:
powershell New-AzureADUser -AccountEnabled $True -DisplayName "Abby Brown" -PasswordProfile $PasswordProfile -MailNickName "AbbyB" - UserPrincipalName "AbbyB@contoso.com"