Description: Device-to-device communication refers to the direct exchange of data between IoT devices without the need for a central server. This approach allows devices to connect and communicate with each other autonomously, facilitating real-time information transfer. D2D communication is fundamental in the context of the Internet of Things (IoT), as it enables the creation of more efficient and faster networks where devices can act in coordination and respond to events without relying on centralized infrastructure. This form of communication is based on network protocols that allow direct interaction, reducing latency and improving system efficiency. Additionally, D2D communication can contribute to reduced energy consumption, as devices can exchange data without having to send information to a server, which in turn decreases the load on the network. In an increasingly interconnected world, device-to-device communication emerges as a key solution to optimize interaction between devices, enabling more advanced applications and a better user experience in smart environments.