Glossary-Link IoT Edge(IoT Edge)-阿里云帮助中心

This topic defines terms related to IoT Edge.

Term	Description
Link IoT Edge	IoT Edge, also known as Link IoT Edge (LE), is the edge computing product of Alibaba Cloud IoT Platform. It provides secure and reliable data computing capabilities to process device data locally. This reduces the cost of uploading data to the cloud.
Link IoT Edge software package	The software package for the Alibaba Cloud IoT Edge product. It includes the Link IoT Edge Lite Edition, Standard Edition, and Pro Edition packages.
LE Lite	Link IoT Edge Lite Edition. It is released as a binary tar.gz file.
LE Standard	Link IoT Edge Standard Edition. It is released as a binary tar.gz file.
LE Pro	Link IoT Edge Pro Edition. It is released as a Docker image.
Gateway	A computing device that runs the Link IoT Edge software. These devices are called edge gateways, or gateways.
Sub-device	A device that connects to an IoT Edge gateway through a specific protocol or interface. After a device connects to a gateway, it is called a sub-device. The gateway acts as an agent for the sub-device to communicate with the cloud.
Driver	The device connection module in IoT Edge. It is also called a device connection driver. All devices that connect to IoT Edge must use a driver to establish a connection.
Edge instance	A resource management feature for the edge provided by IoT Edge. An edge instance associates your devices with a gateway. This connects the devices to IoT Platform for management and control. An edge instance also manages other resources that your devices use, such as drivers, Function Compute, and interaction rules. Note An edge instance is different from an instance in IoT Platform. An IoT Platform instance can contain multiple edge instances. For more information about IoT Platform instances, see View and configure instance endpoint information.
Fun	An Alibaba Cloud serverless application tool that supports defining, developing, testing, and debugging applications locally, along with deploying them to the cloud.
Resumable transfer	A data restoration feature in IoT Edge that works during network outages or on weak networks. When you configure message routing, set the Quality of Service (QoS) to save device data to local storage during a network outage. After the network connection is restored, the cached data is synchronized to the cloud.
Message routing	The feature that uses routing rules to dynamically plan message transmission paths. It routes messages from a source to a destination based on filter conditions.
Device emulator	A device emulator (DeviceSimulator) solution provided by IoT Edge. It consists of a driver and a control tool. Use the device emulator to simulate physical devices.