In larger offices, your groups can be organized according to security levels you specify. All data goes to the same computer (the server) for security and backup. The advantage of organizing in groups is that your sales people can only access sales records, while your accounting people can only access their records. Meanwhile you and or your executives can access all records.

The biggest concerns, however, should be around how your business work-flow can be improved by good e-mail management, calendaring, project management and communications streamlining. If you've ever had a crashed computer that contained all your important e-mail and appointments in Outlook, then you know how essential the principles of backup and recovery are. If you've lost an important contact file or e-mails in Outlook you should be picking up the phone now. If you don't like Outlook or some of the outrageous software prices, then you should be picking up the phone now.