Confusion on Azure AD Driver
The objective is to provision Office365 mailbox to the user based on the IDV.
(1) So If I am to achieve this function, I only need to implement the Azure AD Drive connected to Microsoft Graph API will do, or I also need to setup the Exchange & PowerShell Service also
(2) Assuming all the neccessary is in place, when the Driver 1st run what will happened?
Say my IDV have 2000 user with email address the same as O365 user, and 0365 have 4000 active users. 2000 will match and associated I believe, what happened to the remain 2000 ? I hope they are not disabled in some form
The answer for (1) is that it depends.
If you intend to create the user and assign the user an Office365 license (that contains exchange plan) then
Azure AD Drive connected to Microsoft Graph API will do. However if you want to directly create a mailbox before you assign a Office365 license, then to achieve this you would need the exchange service.
For (2) you will have to run a "migrate to IDV" operation. This will match the 2000 users, merge the information and create the required association. It will add the other 2000 to IDV as new found users.