RIOT serves as the backbone for the Internet of Things in a similar way to how Linux supports the broader Internet. Developed by an enthusiastic global community that includes companies, academic institutions, and hobbyists, RIOT is a free and open source operating system. It is designed to accommodate a wide range of low-power IoT devices and microcontroller architectures, including 32-bit, 16-bit, and 8-bit systems, as well as various external devices. The primary goal of RIOT is to uphold essential open standards that foster a connected, secure, resilient, and privacy-conscious Internet of Things. It features strong security measures such as DTLS for transport layer security, encryption via IEEE 802.15.4, Secure Firmware Updates (SUIT), and a suite of cryptographic packages alongside crypto secure elements. Furthermore, RIOT's modular design allows it to be customized according to specific application requirements. The project maintains compatibility with all widely used network technologies and Internet standards, demonstrating a commitment to innovation and often being an early adopter in the field of networking. Overall, RIOT represents a collaborative effort to shape a secure and efficient IoT landscape.