As an example of what happens when such factors and business domain assessment are neglected in the evaluation, Parker et al. (1988) point to the case of a large US truck leasing company. Here they found that on a ‘hard’ ROI analysis, IT projects on preventative maintenance, route scheduling and despatching went top of the list. When a business domain assessment was carried out by line managers, customer/sales profile system was evaluated as having the largest potential effect on business performance