Explore the process of securely communicating with IoT devices using AWS Amplify and the Device Shadow service in this 20-minute conference talk. Learn about user authentication and authorization, connecting to AWS IoT, and utilizing MQTT for device state management. Discover how to implement these features using the AWS Amplify CLI and SDK, guided by Steve Smith, Mobile Practice Lead at Chariot Solutions. Gain insights into topics such as manual authentication, JSON file configuration, client initialization, sign-in procedures, author roles, identity IDs, endpoint connections, topic shadows, update messages, and state management through shadows and browsers. Master the techniques for publishing and subscribing to IoT device data in this comprehensive overview of IoT implementation on AWS.