Data flows between SharePoint and the Identity Vault by using the Publisher and Subscriber channels.
The Publisher channel does the following:
Watches for changes to SharePoint users and groups.
Synchronizes SharePoint user and group changes with the Identity Vault.
The Subscriber channel does the following:
Watches for changes to the Identity Vault users and groups.
Synchronizes Identity Vault user and groups changes with SharePoint.
You can configure the driver so that Identity Vault is allowed to update a specific attribute. In this configuration, the most recent change determines the attribute value, except in the case of merge operations that are controlled by the filters and merge authority.