At this step of the wizard, choose whether you want to register a new Azure AD application to connect to your Microsoft Office 365 organization or use an existing AD application.
You can select either of the following options:
- Register a new Azure AD application automatically
With this option selected, Veeam Backup for Microsoft Office 365 requires to provide an application name and certificate to register a new AD application in Microsoft Azure Active Directory, as described in Registering New Application.
- Use an existing Azure AD application
With this option selected, Veeam Backup for Microsoft Office 365 requires to provide connection parameters to the existing AD application, as described in Using Existing Application.