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added info about IoT Thing Types

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Lynn Langit 2016-11-26 18:23:33 -08:00 committed by GitHub
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@ -1583,7 +1583,7 @@ IoT
* Send, receive, and process messages: For example, a simple processing board, such as a **Raspberry Pi** ([quick start guide](http://docs.aws.amazon.com/iot/latest/developerguide/iot-device-sdk-c.html)), or an AWS device, such as [Echo or Echo Dot](https://developer.amazon.com/echo), which are designed to work with the [AWS Alexa skills kit](https://developer.amazon.com/alexa-skills-kit) (a programmable voice-enabled service from AWS).
- AWS has a useful [quick-start](http://docs.aws.amazon.com/iot/latest/developerguide/iot-gs.html) (using the Console) and a [slide presentation](http://www.slideshare.net/AmazonWebServices/connecting-to-aws-iot) on core topics.
* **IoT terms:**
* AWS [**IoT Things**](http://docs.aws.amazon.com/iot/latest/developerguide/iot-thing-management.html) (metadata for devices in a [registry](http://docs.aws.amazon.com/iot/latest/developerguide/iot-thing-management.html)) and can store device state in a JSON document, which is called a [**device shadow**](http://docs.aws.amazon.com/iot/latest/developerguide/iot-thing-shadows.html).
* AWS [**IoT Things**](http://docs.aws.amazon.com/iot/latest/developerguide/iot-thing-management.html) (metadata for devices in a [registry](http://docs.aws.amazon.com/iot/latest/developerguide/iot-thing-management.html)) and can store device state in a JSON document, which is called a [**device shadow**](http://docs.aws.amazon.com/iot/latest/developerguide/iot-thing-shadows.html). Device metadata can also be stored in [**IoT Thing Types**](http://docs.aws.amazon.com/iot/latest/developerguide/thing-types.html). This aids in device metadata management by allowing for reuse of device description and configuration for more than one device. Note that IoT Thing Types can be deprecated, but not changed -- they are immutable.
* AWS [**IoT Certificates**](http://docs.aws.amazon.com/iot/latest/developerguide/attach-cert-thing.html) (device authentication) are the logical association of a unique certificate to the logical representation of a device. This association can be done in the Console. In addition, the public key of the certificate must be copied to the physical device. This covers the authentication of devices to a particular AWS Device Gateway (or message broker).
* AWS [**IoT Policies**](http://docs.aws.amazon.com/iot/latest/developerguide/authorization.html) (device/topic authorization) are JSON files that are associated to one or more AWS IoT certificates. This authorizes associated devices to publish and/or subscribe to messages from one or more MQTT topics.
* AWS [**IoT Rules**](http://docs.aws.amazon.com/iot/latest/developerguide/iot-rules.html) are SQL-like queries which allows for reuse of some or all device message data, as described in [this presentation, which summarizes design patterns with for IoT Rules](http://www.slideshare.net/AmazonWebServices/programming-the-physical-world-with-device-shadows-and-rules-engine-66486454).