To enhance security to Office 365 customers, Microsoft now requires any third-party applications wishing to integrate with Office 365 and Azure AD to register with Azure AD Enterprise Apps. This enables an additional layer of vetting from Microsoft and gives customers additional visibility and controls over access to their data.
Before any of our products can integrate with your user-level data (delegated permissions) or tenancy-wide data (application/daemon permissions) you must first grant the relevant Enterprise App in AAD access to your data.
IAM Cloud have a number of applications that access Office 365.
Delegated Permissions / User-Level Access
Cloud Drive Mapper
Application Permissions / Tenancy-Level Access
Simple Sign-On (formerly 'IAM Cloud Base Plan')