If you use both Google Apps and Microsoft Outlook you can take advantage of Google Apps Sync. One of the many features of Google Apps Sync is that it allows you to have your personal contact information imported and synchronized between Outlook and Google.
Automatic features of synchronizing
Once you've synchronized the Outlook and Google interface, you can find contacts by using "My Contacts" in Google or by entering an address in an e-mail message. Via both Google contacts and Outlook, you can view all of your global contacts.
Without Google Apps Sync, you cannot access contact information in Outlook not supported by Outlook, such as "Google Voice" information. However, you can view this information in Outlook as a read-only attachment if you integrate using Google Apps Sync.
Features that must be transferred manually
Some Outlook features are not automatically synchronized into Google. For example, if you want distribution lists from Outlook to appear as Google groups, you will have to recreate lists in Google as Google groups. You will also have to manually organize contacts that are grouped as "family" or "friends" in Outlooks using Google's personal groups feature in Google Apps.
Things to be aware of
When it comes to making updates between Google Apps and Outlook, the resulting changes in Outlook may not always come out as desired or expected. You might notice information doesn't transfer between the two interfaces identically, and you may even see a conflicting error come up if you attempt to make a change in Google Apps.
Additionally, keep in mind the following limitations of Google Apps Sync. The following factors will not be synchronized between Google Apps and Outlook: