Integrating travel systems with legacy software presents several challenges, including compatibility issues, data synchronization problems, and the need for custom development. Legacy systems may use outdated technologies or data formats that are incompatible with modern travel tech solutions, requiring complex mapping and conversion processes. Data synchronization issues can arise when ensuring that information between old and new systems remains accurate and up-to-date. Additionally, integrating legacy systems often involves custom development and modifications, which can be time-consuming and costly. Addressing these challenges requires careful planning, technical expertise, and potentially upgrading or replacing legacy systems to achieve seamless integration.