Hi Glen,
To expand a little on Tim's response, a high level description of the Internet of Things Platform is that it is a hosted MQTT broker running in the IBM Cloud that provides additional capabilities such as a device registry, device management and security, to name a few. Customers can register their devices with the Platform and then connect those devices and publish MQTT events.
The Internet of Things Platform can be configured to connect to other offerings in the IBM Cloud, primarily to make the data available for more advanced processing/analytics.
You can find the documentation for the Internet of Things Platform here:
https://console.bluemix.net/docs/services/IoT/index.html#gettingstartedtemplate
The IoT Connection Services (IoTCS) offering that Tim mentioned is a solution that brings together a number of IBM Cloud services, including the Internet of Things Platform, with IBM managing them on your behalf.
Thanks.
Martin Smithson
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