IoT system-on-module (SOM) based on STM32F4* is a product of Sigma Delta Technologies Inc. (SDT), designed to serve as a general-purpose secure IoT module for end products, such as home appliances, utility meters, and medical devices. SDT provides essential security features to customers, including secure boot, secure programming, secure storage, and secure communication. As connectivity is crucial for the IoT, the module is built with a connectivity component, such as Ethernet, Wi-Fi, Wi-SUN FAN, LTE Cat-M1, or LTE. SDT also provides cloud and infrastructure services, such as Arm Pelion, Amazon AWS, Microsoft Azure, and Samsung SmartThings with digital certificates for IoT devices.