M2M, or Machine-to-Machine communication, refers to the direct exchange of data between devices without human intervention. This technology enables devices to connect and communicate over networks, allowing them to share information and perform tasks automatically. M2M is commonly used in various applications, including smart homes, industrial automation, and healthcare. The growth of the Internet of Things (IoT) has significantly boosted M2M communication, as more devices become interconnected. Examples of M2M applications include smart meters that monitor energy usage, connected vehicles that share traffic data, and wearable health devices that track vital signs.