Zulu Contacts Overview
From 360Works Product Documentation Wiki
Why Sync with Google Contacts?
Syncing your FileMaker contacts with Google makes them portable, so that you can work with your FileMaker contacts in Google, in the iPhone's address book, and in the Mac Address Book application.
When you add or edit a contact in one of these applications, Zulu syncs that edit with your FileMaker database.
For the first time, you can have one contact list, based in FileMaker, and accessible on your mobile devices.