Tourism is often defined as an economic sector that deals with innovation and production of tourism products and services. It is a very complex economic sector, since tourism products and stakeholders are constantly changing due to changing external forces. Therefore, development and progress of information and communication technology have had an enormous impact on tourism as well as on other sectors of the economy associated with it. Over the years, the use of modern technology in tourism has been expanded to provide a wider range of products and services to tourists all over the world, and is a key determinant of competitiveness in this sector. The subject of this paper is a look at the implications of modern technology for the tourism sector of the Republic of Serbia and the ways in which it contributes to increasing competitiveness. The analysis relies on the World Economic Forum methodology for the presentation of competitiveness of the travel and tourism sector, namely the Travel and Tourism Competitiveness Index. The aim of the paper is to examine the degree of contribution of ICT readiness pillar to the competitiveness of the tourism sector in the Republic of Serbia.