On prem AD to Azure sync

[Stuart-Jolley]

Hi there,

We currently run an on-premise 2016 AD server as well as a completely separate Azure AD with 0365 integration.

I know I can connect the two with the "Azure AD Connector" tool however when I tried this out on a test domain I found that it duplicated entries rather than merge existing ones together.

Is there any way so that I can merge my on-premise with my Azure so that I have a single management pane rather than having to create/modify users in two separate places.  Ultimately my aim is to be able to create a user on-prem and it gets sync'd to Azure with a new O365 account and email address set up automatically.  Is this possible and if so how?

First though I need to be able to merge the two databases into one seamless operation rather than having the two duplicated 

Many thanks

Stuart

[#2]

To "match" the on-premises objects against already created cloud ones, you have two options:

1) Soft match, based on SMTP address: http://support.microsoft.com/kb/2641663

2) Hard match, based on objectID: http://blogs.technet.com/b/praveenkumar/archive/2014/04/12/how-to-do-hard-match-in-dirsync.aspx

[#3]

@Vasil Michev 

Many thanks for that - would it be a case that once all setup and working, I would be able to create a new user on-prem (name, username, email addr) and when the sync is finished with the Connector it would create the new user in AAD and create a new inbox within O365/Exchange Online?

[#4]

The user, yes. The mailbox, depends on how you provision things on-premises, you will need to use the relevant Exchange cmdlets. Or, simply license the user once it's created in O365.