I shortly came into a situation with a customer who’s got to have OnPremise IT infrastructure for the first time. As a start-up they began with BYOD and some SaaS applications incl. a Hosted Exchange.
Since they are and will be heavily growing over the next few years they decided to plan and implement an IT infrastructure OnPremise with only a few components for security and client deployment including an Active Directory and combine that with Office365 and AzureAD for Mail and SaaS Application Management.
The migration from Hosted Exchange to O365 is already done, which leads into user account in Azure AD for all 250 users. I’ve implemented the Active Directory for them and now want to synchronize OnPrem AD Users with AzureAD.
But since all account are in Azure AD, I have to do an initial import of those accounts from Azure AD to OnPrem. And that’s where the issues began.