Forum Discussion
Existing O365 Environment with AD and Introducing Azure AD Connect
I have an all cloud email environment in O365 but an on-premises Active Directory environment. We must introduce Azure AD Connect to get the two environment aligned. I know what I need to do to sof...
a-s-17 If all your email objects - shared mailboxes, distribution lists etc - are already in Exchange Online, and you aren't planning to sync any mail-enabled objects from on-premises then you don't need Exchange on-premises.
Essentially, AAD Connect Sync in this case will mainly sync user objects and only mail properties you would need changing for user objects is email aliases which you can do using AD tools by adding proxyAddresses.