Prioritizing Green Business Startup Ideas for University Students through the Integrated Multi-Criteria Model GANTT - EFAS - FUZZY - AHP – TOPSIS

In the trend of globalization associated with the need for innovation and sustainable development, starting a green business has become a strategic direction for university students - young people who have the ability to approach innovative thinking and are sensitive to environmental and social issues. However, choosing a green startup idea is not simply a process of developing creative ideas, but also requires a multi-criteria evaluation system to balance environmental, economic, feasibility and practicality factors. On that basis, this study builds and applies an integrated decision-making model including GANTT (evaluating ideal progress), EFAS (analyzing external environmental factors), FUZZY - AHP (standardizing weights of criteria under uncertain conditions), and TOPSIS (ranking optimal choices). The model is deployed to survey 1,000 students from 50 universities in Hanoi, thereby providing a scientific basis for ranking and selecting green business startup ideas suitable for students' conditions and capabilities.