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This tutorial describes how to connect MQTT Engine or MQTT Transmission to Amazon Web Services (AWS) IoT Core. With regard to MQTT Engine, AWS IoT does not support guaranteed in order delivery of QoS 0 messages. This is not all that uncommon among horizontally scalable/clustered MQTT Servers. With that, MQTT Engine is capable of 're-ordering' messages that arrive out of order with a special configuration option. This will also be covered in this tutorial.


Warning

AWS IoT Core supports messages with a maximum message length of 128 KB. 

Provisioning the 'Thing'

Before configuring MQTT Engine or MQTT Transmission, you must register a 'thing' connection in AWS IoT Core. Begin by browsing to AWS IoT Core in your AWS account. Make sure you are in the same AWS region that you intend to connect the MQTT Module to. Begin by expanding 'Secure' and click 'Policies' as shown below.

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