Educational technology plays several important roles in 21st century education by supporting student-centered, collaborative learning with real-world context. It provides constant access to information and opportunities for social interaction and digital content creation. Technology should be integrated comprehensively to develop 21st century skills through innovative teaching, and to create robust education support systems. Key functions of educational technology include improving teaching and learning, analyzing and enhancing the teaching-learning process, developing curriculum and teaching strategies, and overall improvement of the education system through evaluation and feedback.