In the educational technology industry, the application of CDN (Content Delivery Network) is becoming increasingly crucial. CDN accelerates content loading on educational platforms, promotes global sharing of educational resources, and supports real-time interactive teaching, significantly enhancing learning experiences and educational efficiency. This article will delve into the multiple roles and benefits of CDN in the educational technology industry. Accelerating Content Loading on Educational Platforms With the widespread adoption of online learning platforms, rapid and stable access speed has become a key factor in improving user experience. CDN, by deploying numerous servers in different geographic locations globally, can bring educational content such as videos, images, and documents closer to end-users, thereby significantly reducing latency and accelerating content loading speed. This not only improves students' learning efficiency but also reduces learning barriers caused by technical issues. Promoting Global Sharing of Educational Resources The use of CDN breaks geographical and bandwidth limitations, allowing distant educational resources to be easily accessed by users worldwide. This is particularly important for promoting the sharing of Open Educational Resources (OER). Students and teachers, regardless of their location, can share and utilize educational resources globally, promoting knowledge equality and free flow. Supporting Real-time Interactive Teaching In modern education, real-time interaction is a crucial factor in enhancing teaching effectiveness. CDN can effectively support real-time video teaching, online seminars, and interactive learning activities, ensuring smooth and uninterrupted audiovisual data streams and providing close-to-real-time interactive experiences. This significantly promotes participation and interactivity in online classrooms, enabling students to actively engage in the learning process. Conclusion The application of CDN in the educational technology industry provides robust technical support for global sharing of educational resources, content loading speed, and real-time interactive teaching. By improving access speed and reducing technical barriers, CDN not only enhances the quality of online learning but also lays a solid foundation for educational equity and the construction of a global learning community. In the future, with the integration of more innovative technologies, CDN will continue to play a core role in driving the development of educational technology.