Dynamic Spectrum Access (DSA) is a technology that allows devices to use radio frequency spectrum more efficiently. Instead of assigning fixed frequency bands to specific users, DSA enables devices to share available spectrum dynamically. This helps reduce congestion and improves communication quality, especially in crowded areas. By utilizing advanced algorithms and real-time data, DSA can identify unused frequencies and allocate them to users as needed. This approach is particularly beneficial for wireless communication systems, such as cellular networks and Wi-Fi, where demand for bandwidth often exceeds supply.