Amazon FreeRTOS is an open source real-time operating system for microcontrollers that makes it easy to securely connect small devices to AWS IoT services like AWS IoT Core and AWS Greengrass. It provides features for multi-tasking, messaging, security, and connectivity to AWS while reducing complexity and costs compared to rolling your own solution. Amazon FreeRTOS is free to use and integrates with over 100 AWS services to enable a wide variety of IoT use cases across industries.