From csrc.nist.gov - March 15, 2018 6:18 AM
IoT is a concept based on creating systems that intera ct with the physical world using networked  entities (e.g., sensors, actuators, information resources, people). 
 There can be confusion around the meaning of the term “ Internet of Things ” for a variety of  reasons. They include: the cross -cutting aspect of IoT (specifically with respect to application  domains) ; the multitude of stakeholders involved in IoT and their specific use cases ; the complexity of IoT ; and the rapidly changing technology supporting IoT.  While there is no universal definition of IoT, common elements exist among the many high- level 325 definitions and descriptions for IoT. The Internet of Things consists of two foundational concepts:  IoT components are connected by a network providing the potential for a many -to-many 330 relationship between components (this network capability may or may not be TCP/IP based) ; and some of the IoT components have sensors and actuators that allow the components to interact with the physical world