AWS Greengrass

Greengrass Core

• Runtime allowing code execution on IoT
• Allows to run local Lambda functions on device
• Local MQTT messaging across network
• Secure communication with cloud
• Device with Greengrass may act as a gateway for less powerful devices
• Over-The-Air (OTA) Updates
• Supported devices
  • >= 128 MB memory
  • x86/ARM (>=1GHz)
  • Example
    • RaspberryPi
• Use cases
  • Filter/aggregate device data to only transmit necessary 
    • Reduces cost
  • Offline processing (connectivity may be slow or intermittent)
  • Can be deployed on Snowball Edge

Greengrass Group

• Collection of
  • Greengardd Cores
  • Devices (Amazon FreeRTOS, iOT Device)
• Things can communicate with each other

References

• https://aws.amazon.com/blogs/aws/aws-greengrass-run-aws-lambda-functions-on-connected-devices/