The IoT is not about collecting and publishing data from the physical world but rather about providing knowledge and insights regarding objects (i.e., things), the physical environment, the human and social activities in the physical environments (as may be recorded by devices), and enabling systems to take action based on the knowledge obtained. In other words, raw IoT data is not what the IoT user wants; it is mainly about ambient intelligence and actionable knowledge enabled by real world and real time data.