In the contemporary tourism landscape, the integration of advanced technologies into planning and marketing strategies is becoming increasingly vital for the success and sustainability of destinations. This paper explores the critical role of spatiotemporal behavior analysis—tracking the movements and patterns of tourists and residents over time and space—in enhancing tourism planning and marketing. By leveraging cutting-edge technologies such as GPS tracking, mobile phone data, and social media geotagging, destinations can gain unprecedented insights into visitor flows, preferences, and interactions with local environments. These insights facilitate more effective resource allocation, visitor flow management, and targeted marketing efforts, ultimately contributing to the development of competitive and sustainable tourism destinations. However, the integration of spatiotemporal data into tourism strategies is not without challenges, including concerns around data privacy, the need for robust data management systems, and the potential over-reliance on technology. The study findings suggest that destinations that effectively harness spatiotemporal analytics can significantly enhance their competitiveness by creating more tailored and engaging visitor experiences, optimizing resource distribution, and mitigating the adverse impacts of overtourism.