What is AWS IoT Greengrass? - AWS IoT Greengrass

AWS IoT Greengrass is software that extends cloud capabilities to local devices. This enables devices to collect and analyze data closer to the source of information, react autonomously to local events, and communicate securely with each other on local networks. Local devices can also communicate securely with AWS IoT Core and export IoT data to the AWS Cloud. AWS IoT Greengrass developers can use AWS Lambda functions and prebuilt connectors to create serverless applications that are deployed to devices for local execution. The following diagram shows the basic architecture of AWS IoT Greengrass. AWS IoT Greengrass makes it possible for customers to build IoT devices and application logic. Specifically, AWS IoT Greengrass provides cloud-based management of application logic that runs on devices. Locally deployed Lambda functions and connectors are triggered by local events, messages from the cloud, or other sources. In AWS IoT Greengrass, devices securely communicate on a local network and exchange messages with each other without having to connect to the cloud. AWS IoT Greengrass provides a local pub/sub message manager that can intelligently buffer messages if connectivity is lost so that inbound and outbound messages to the cloud are preserved. Through secure connectivity in the local network. Device security credentials function in a group until they are revoked, even if connectivity to the cloud is disrupted, so that the devices can continue to securely communicate locally. MQTT messaging over the local network between devices, connectors, and Lambda functions using managed subscriptions. MQTT messaging between AWS IoT and devices, connectors, and Lambda functions using managed subscriptions. Shadows can be configured to sync with the AWS Cloud. Automatic IP address detection that enables devices to discover the Greengrass core device. Central deployment of new or updated group configuration.