The potential of information technology (IT) resources to empower employees, to shape customer service and contribute to the competitive performance of hospitality firms has received much attention. Yet empirical evidence has been lacking. This study draws on the resource-based view of the firm and the service-profit chain framework to develop and test a model of the effects of a complementary system of tangible and intangible IT resources on employee and customer service outcomes and on competitive performance. A structured questionnaire was used to collect data from 112 hospitality establishments operating in South Africa. Results revealed that the complementary system of IT resources has significant direct effects on competitive performance whilst its effect on customer service outcomes is fully mediated by employee outcomes. Results support the contention that hospitality service is information intensive. In addition to employees, tangible and intangible IT resources demand the attention of hospitality managers and their role in competitive strategy must be considered.