Azure AD Application Permissions
Veeam Backup for Microsoft Office 365 requires that you grant permissions to Azure AD applications to back up and restore data from/to your Microsoft Office 365 organizations. Azure AD applications must have different permissions in organizations with modern app-only authentication and organizations with modern authentication and legacy protocols. For more information, see the following sections:
- Permissions for Modern App-Only Authentication
- Permissions for Modern Authentication and Legacy Protocols
For more information about permissions in Azure, see this Microsoft article.