Deploy a custom component to an edge device using AWS IoT Greengrass v2

Steps

1. Install the Greengrass nucleus on the edge device by running the installer JAR with --provision true, which creates an IAM role, IoT Thing, and certificate automatically; the device appears in the Greengrass core devices console
2. Write a component recipe in YAML or JSON specifying ComponentName, ComponentVersion, a Lifecycle section with an Install and Run script, and an Artifacts section pointing to the component binary in S3
3. Upload the artifact to S3 and publish the component recipe: aws greengrassv2 create-component-version --inline-recipe fileb://recipe.yaml
4. Create a deployment targeting the Thing or a Thing Group: aws greengrassv2 create-deployment --target-arn <arn> --components '{"com.example.MyComponent":{"componentVersion":"1.0.0"}}'
5. Monitor deployment status via aws greengrassv2 get-deployment or in the console; Greengrass downloads artifacts, installs dependencies, and starts the component according to the recipe lifecycle
6. Use the Greengrass IPC SDK in the component code to publish/subscribe to local MQTT topics or interact with other components on the device without leaving the edge