Module 5: Interacting with device shadows - AWS IoT Greengrass

AWS IoT Greengrass Version 1 no longer receives feature updates, and will receive only security patches and bug fixes until June 30, 2023. For more information, see the AWS IoT Greengrass V1 maintenance policy. We strongly recommend that you migrate to AWS IoT Greengrass Version 2, which adds significant new features and support for additional platforms.

Module 5: Interacting with device shadows

This advanced module shows you how client devices can interact with AWS IoT device shadows in an AWS IoT Greengrass group. A shadow is a JSON document that is used to store current or desired state information for a thing. In this module, you discover how one client device (GG_Switch) can modify the state of another client device (GG_TrafficLight) and how these states can be synced to the AWS IoT Greengrass cloud:


                AWS IoT Greengrass core is connected to a traffic light device shadow and a light switch
                    device.

Before you begin, run the Greengrass device setup script, or make sure that you have completed Module 1 and Module 2. You should also understand how to connect client devices to an AWS IoT Greengrass core (Module 4). You do not need other components or devices.

This module should take about 30 minutes to complete.