The subject of this graduate thesis is the initiation of prepaid parking service at the Zagreb International Airport (MZLZ), with a goal of increasing customer satisfaction, better flow of vehicle and digitalization of the car parking service. Considering the possibilities of technology, the solution is in line with global trends and developments of the world’s airports. From the standpoint of the Zagreb International Airport the project is more than desirable. Airports are aiming to increase their efficiency and operational profitability by aligning them with market trends. Non-aeronautical business segments, where parking is one of the most significant or most valued segment, are holding down an important place in increasing revenue per passenger. Therefore, in this segment regular maintenance and renewal of the service are required. MZLZ constantly works on improving the quality of its services in order to increase customer satisfaction. Monitoring of Customer Satisfaction Services through the CRM System as well as the Airport Service Quality Certification (ASQ) is carried out by the International Airport Association International (ACI) with collecting data. Based on the obtained results activities are undertaken in order to improve existing services, also to develop some new. With the opening of the new passenger terminal, the airport has been modernized, its technological equipment has been improved and capacities have been increased. Considering the trend of increasing the number of passengers, as well as their satisfaction and a significant share of the revenue from parking services in non-aeronautical activities of MZLZ, this project for travelers and users of MZLZ car park aims to provide a better and more modern service, also increase the flow of vehicle. Consequently, higher revenue and better results are expected in the parking segment. This graduate thesis presents the proposal for modernization the car parking service at the MZLZ, with a complete technical solution, financial coverage, forecasts, and returns calculations. With this thesis, the project is ready for implementation and anticipates possible upgrades in the future, in line with world trends and meeting market needs.