Sales force automation (SFA) is a customer relationship management tool that streamlines sales team activities. It improves sales force productivity by encouraging documentation of field activities and cultivating customer relationships. The main categories of SFA are sales process/activity management, sales territory management, contact management, lead management, and knowledge management. SFA provides benefits like producing an efficient sales force, enhancing customer relationships, providing timely data for decision making, and enabling easy tracking of centralized customer information.