In the new journey of comprehensively building a modern socialist country, the integrated development of education, science and technology, and human resources has become a strategic foundation for constructing national core competitiveness. Based on the dynamic ecosystem formed by these three elements, this paper focuses on “educational technology” as a key coupling agent. From an interdisciplinary perspective of systems theory and pedagogy, it deeply analyzes how educational technology reshapes the paradigm of talent development. Furthermore, it proposes a full-chain mechanism centered on “data-driven processes, intelligent empowerment, digital profiling, platform connectivity, and closed-loop feedback,” providing theoretical support and practical pathways for promoting the modernization of the education system.