District administration in India, led by District Magistrates (DMs), is undergoing a digital transformation to address the growing complexities of governance. This paper proposes a structured framework for implementing a technology-driven Decision Support System (DSS) tailored to the complex decision-making responsibilities of DMs. The framework adopts a multiphase implementation strategy, beginning with stakeholder requirements assessment, and progressing to national rollout and institutionalization. A key contribution of the study is the integration of a responsibility matrix to clearly define stakeholder roles and streamline coordination throughout DSS implementation. To ensure an evidence-based approach, insights from the barrier analysis were derived by systematically prioritizing and analyzing the causal interrelationships of critical implementation barriers using the Fuzzy Best-Worst Method (FBWM) and the Decision-Making Trial and Evaluation Laboratory (DEMATEL) method. The combined insights guided the design of informed responsibility allocation. Additionally, a capacity-building framework supported by role-specific training and digital learning platforms is proposed. A performance evaluation model links DSS usage to key performance indicators and provides diagnostic tools for continuous improvement. A time-saving use case demonstrates that the DSS can reduce administrative workload by 19.3% per week per DM. The study concludes with a scalable technology deployment framework adaptable across public systems.