In an Enterprise Single Sign-On (ENTSSO) environment, password synchronization ensures that users' passwords on different platforms are in sync and automates the distribution of user- or administrator-initiated password updates. In environments that don't have automatic password synchronization, users can use the same password on every platform, but you have to update the ENTSSO and non-Windows credential databases manually whenever a user changes a password in Active Directory (AD) or in a non-Windows credential database. You then have to update all the credential databases. And all those updates have to be reflected in the databases as soon as possible, which can make a busy administrator's life difficult.
ENTSSO can work with different user passwords on different platforms (i.e., without password synchronization). But this strategy requires disciplined users and administrators: each time users update non-Windows passwords, they have to make sure that their changes are reflected in the ENTSSO database in a timely fashion. . . .