The on-premise deployment of Adobe Connect can be configured to synchronize with an Active Directory (LDAP). The information I can find on this is below.
Of course you should also Contact Adobe Support if you have specific questions and of course to validate these instructions. Note that I have not worked through this process myself.
Detailed instructions are included in these first two links.
How to configure LDAP Authenticator for Connect
https://helpx.adobe.com/adobe-connect/kb/configure-ldap-authenticator-connect.html
Adobe Connect Directory Service Integration for LDAP Sync and Authentication – Explained
The ‘Using Connect Web Services’ guide below is the reference document for this process/integration.
Connect 8 Web Services and Developer Help
http://help.adobe.com/en_US/connect/9.0/webservices/index.html
Using Connect Web Services