The rapid advancement of information and communication technologies has transformed the educational landscape, leading to the widespread adoption of online learning platforms in higher education. These platforms facilitate flexible learning, enhance accessibility, and support diverse instructional methods. This study investigates the effectiveness of online learning platforms in higher education by examining their impact on student engagement, academic performance, accessibility, and satisfaction. A mixed-method research design involving 450 undergraduate and postgraduate students from multiple universities was employed. Quantitative data were analyzed using descriptive statistics and regression analysis, while qualitative insights were obtained through structured interviews. Results indicate that online learning platforms significantly improve learning flexibility, resource accessibility, and student participation. However, challenges such as technological barriers, reduced social interaction, and digital fatigue remain concerns. The findings suggest that online learning platforms can effectively complement traditional teaching methods when supported by appropriate instructional design and technological infrastructure.