The aim of this study is to determine the importance of government incentives and supports for technology development zones (TDZ) for businesses operating in these regions and the effect of businesses on their preferences to operate in these regions. For this purpose, a questionnaire was applied to 47 of the 57 companies operating in Cumhuriyet Teknokent. Within the scope of the research, with the questionnaire form which includes questions in three different categories: “Descriptive information”, “Elements affecting the operation in Technology Development Zones” and “Thoughts on incentives and supports provided to Technology Development Zones”; The opinions of the participants, whether they are academics or not, male or female, and those who operate outside the Technology Development Zones or not, were compared and significant differences were determined. In addition, the most important support factor that reduces the costs of most of the participants is Value Added Tax (VAT) exemption, the most important advantage of incentive policies is that they reveal new investment ideas, the most important factor affecting opening a company in Technology Development Zones is the support and incentives provided, incentives and supports reduce the tax burden. It has been determined that they facilitates investment and reduces the need for capital.