This study affirms the influence of integrating Blockchain & IoT technology on the effectiveness of (MIS), particularly in enhancing system performance and data security across selected institutions in the United Arab Emirates. Grounded in the DeLone and McLean Information Systems Success Model (2003), the study adopts a descriptive-analytical methodology utilizing both structured questionnaires and semi-structured interviews. Data analysis was conducted using SPSS V29, employing correlation and regression techniques. The findings reveal a strong and positive relationship between the implementation of Blockchain and IoT technologies and key MIS performance metrics. The study concludes with practical recommendations aimed at assisting decision-makers interested in adopting these technologies within institutional information systems.