Iot Core

Region specific endpoints
Device Gateway - pub/sub model
Device Shadow - properties of connected devices, could have been called fingerprint?
Supports MQTT
Registry - Organize and track devices. Each device has it’s unique handle in the registry @myawesomelightbulb.
Rules Engine - SQL like rules to filter/transform and forward incoming device metrics/data to other AWS/3rd party services
Thing Type - Categorize similar devices with common attributes (up tp 50, 3 searchable)
Simplified Permission Management - x.509 certificates

IoT Greengrass

Edge runtime
Process data locally
Perform inferences based on ML models
Deploy lambda (with Greengrass SDK) to these devices

IoT Message Broker

IoT devices’ telemetry, device management, device security and IoT Analysis.
Supports industry standard lightweight protocols such as MQTT, HTTP and MQTT over WebSocket.