Maintaining a competitive advantage is paramount, no matter what business you operate within. Engineer-to-order (ETO) companies that produce complex products, usually in low volumes, and with project control techniques, are no exception. A lean enterprise involves the reduction or elimination of any activity that does not add value to a customer. In order to effectively utilize lean, lean concepts must be taken from the manufacturing floor and used thorough the ETO enterprise. This paper demonstrates how IFS applications supports the principles of developing a lean enterprise for ETO organizations. It demonstrates how process improvements apply equally to office-based functions, manufacturing, installation, and service activities.