The author examines the transformation of the role of scientific and technical libraries in the context of digital economy and their integration into the ecosystem of youth research creativity. She analyzes several challenging issues, such as the fragmentation of scientific platforms and the lack of unified coordination system for young researchers, with the focus on the need for adapting library services to the characteristics of Generation Z. The study employs correlation analysis and systems approach, revealing significant relationships between library activity indicators and scientific achievements: the correlation coefficient between library visits and the choice of a scientific career is 0.781, while the correlation between collection size and patent activity is 0.894. The influence of key megatrends on library system development is also examined. The main findings include the evidence of the long-term impact of libraries on youth scientific engagement, development of ecosystem model for libraries as multifunctional research hubs, and specific proposals for modernizing library services. The scientific novelty of the study lies in its unique comprehensive analysis of the role of libraries in the context of youth research creativity, the development of original ecosystem model, and identification of new patterns in the influence of library activity on scientific achievements. The practical significance of the study lies in its potential application for improving government science and technology policies, designing digital transformation programs for libraries, and creating integrated platforms to support young researchers.