MIMO, which stands for Multiple Input Multiple Output, is a technology used in wireless communication. It involves using multiple antennas at both the transmitter and receiver ends to improve the transmission and reception of data. This allows for higher data rates and better signal quality, making it essential for modern wireless networks. By utilizing multiple antennas, MIMO can send and receive more information simultaneously, reducing interference and increasing efficiency. This technology is widely used in various applications, including Wi-Fi, 4G, and 5G networks, enhancing the overall performance of mobile and internet services.