<![CDATA[This study aims to develop and empirically test a resource sustainability evaluation model for non-profit organizations based on an industrial management system perspective by integrating internal process integration and external marketing strategy. The object of this study is the Marvin Foundation, with respondents consisting of donors, active volunteers, and organizational partners. The study employs an explanatory quantitative approach with a cross-sectional survey design and purposive sampling technique, involving 100 respondents. Data analysis was conducted using Partial Least Squares–Structural Equation Modeling (PLS-SEM) with the assistance of SmartPLS software. The results indicate that internal process integration has a positive and significant effect on resource sustainability, with a path coefficient of 0.420, while external marketing strategy also shows a positive and significant effect, with a coefficient of 0.360. The coefficient of determination (R²) of 0.580 suggests that the model has moderate to substantial explanatory power. Furthermore, the predictive relevance value (Q²) of 0.34 indicates that the model possesses good predictive capability. These findings highlight that resource sustainability in non-profit organizations is not solely determined by external factors but is strongly influenced by the integration of internal organizational processes. This study contributes to the development of a resource sustainability evaluation model based on an industrial management system approach and provides practical implications for improving organizational effectiveness and long-term sustainability.]]>
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