IoT refers to Internet of Things. Examples of IoT systems include a smart electric grid, a home controlled by sensors, self-driving cars, smart factories, and heart health monitors.

"More than 20 professional and research groups have worked to characterize the IoT, but so far there is not one universally accepted definition...Four fundamentals at the heart of IoT are: sensing, computing, communication and actuation." - National Institute of Standards and Technology (NIST) 

"IoT has been defined as a global infrastructure for the information society, enabling advanced services by interconnecting (physical and virtual) things based on existing and evolving interoperable information and communication technologies." - International Telecommunications Union (ITU)

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