There is an add-on that performs a kind of synchronization:

https://addons.thunderbird.net/en-US/thunderbird/addon/addressbooks-synchronizer/

There are add-ons to sync network address books, such as TbSync and Card Book, as well as the built-in CardDAV option. These work well with a single user syncing contacts over several devices, but some care would be needed with multiple users accessing the same contacts, to avoid conflicts. Perhaps give one user read/write access, and the others read-only access.

Thank you for your answer. We need to synchronize contacts for different users. I checked all the add-ons you added, but I think we'll use the built-in Thunderbird LDAP option. Thanks for your time and reply.