Organizations around the world come in a variety of shapes and sizes. As Office 365 for Small Businesses and Professionals is limited to 50 users and does not support Directory Synchronization, customers are limited in what choices they can make to integrate with on-premise solutions.
For many small businesses that are looking to move to Office 365 they may be doing so for a variety of reasons.
IT is generally relegated to business support and rarely seen as a revenue generator, with small businesses holding on to their servers as long as possible. As such they are usually reluctant to spend a portion of their capital to fund another depreciating asset. For this reason, Office 365 becomes an attractive option as there is no capital outlay to start using the service.