The world of communications has witnessed a significant development in the field of computer networks in recent years, which has led to a marked improvement in the speed of the Internet and the quality of digital services. Modern networks have become a key element in supporting technological development, whether in education, trade or communications. This article aims to clarify the concept of modern networks and show their direct impact on the speed of the Internet Modern networks are advanced communication systems based on new technologies and protocols to transfer data with high efficiency. The most prominent of these networks are: fiber optic networks, 5G networks, and advanced wireless networks. These networks are characterized by high transmission speeds and low delay time compared to traditional networks Modern networks include several types, the most important of which are fiber optic networks that rely on light to transmit data at very high speeds, and 5G networks that provide a fast and stable connection to smart devices. Software-defined networks (SDN) are also modern technologies that contribute to improving network management and performance Modern networks have contributed significantly to increasing the speed of the Internet by improving the mechanism of data transmission and reducing its loss. Optical fibers provided high speeds of up to several gigabits per second, while 5G networks contributed to improved wireless Internet speed and reduced response time. This development reflected positively on the use of modern applications such as live streaming, electronic games, and cloud services Improved Internet speed has facilitated communication between individuals and institutions, supported e-learning, and developed e-business. It also helped to improve the efficiency of remote work and increase reliance on digital technologies in various fields In conclusion, it can be said that modern networks play a pivotal role in improving the speed of the Internet and the quality of digital services. As technological development continues, these networks are expected to contribute to a paradigm shift in the field of communications and support digital transformation in different societies Al-Mustaqbal University, the first Iraqi private universities