Internet of Things
The Internet of Things (IoT) is not some new information-retrieving protocol. It’s about the devices we use every day that connect to the Internet, how they interact, and how businesses can use them.
The physical world is becoming a type of information system. The vision of “Internet of Things (IoT)” with more than 50 billion connected devices (containing embedded sensors and actuators, etc.), linked through (often using the same Internet Protocol (IP) that connects the Internet) wired and wireless networks by year 2020, will see profound changes in the way people, businesses and the society interact.
[Cisco]: The Internet of Things (IoT) can be defined as "a pervasive and ubiquitous network which enables monitoring and control of the physical environment by collecting, processing, and analyzing the data generated by sensors or smart objects."
In reality, Machine-to-Machine (M2M) can be viewed as a subset of the IoT. The IoT includes Machine-to-Human communication (M2H), Radio Frequency Identification (RFID), Location-Based Services (LBS), Lab-on-a-Chip (LOC) sensors, Augmented Reality (AR), robotics and vehicle telematics. Many of these technologies are the result of developments in military and industrial supply chain applications; their common feature is to combine embedded sensory objects with communication intelligence, running data over a mix of wired and wireless networks.
[IEEE Internet of Things (IoT)]: The mission of the IEEE IoT Initiative is to serve as the gathering place for the global technical community working on the Internet of Things; to provide the platform where professionals learn, share knowledge, and collaborate on this sweeping convergence of technologies, markets, applications, and the Internet, and together change the world.
Pervasive computing (also called ubiquitous computing) (means "existing anytime and everywhere") is the growing trend towards embedding microprocessors in everyday objects so they can communicate information. Pervasive computing devices are completely connected and constantly available. Pervasive computing relies on the convergence of Internet, advanced middleware, operating system, mobile code, sensors, microprocessors, new I/O and user interfaces, networks, mobile protocols, location and positioning and new materials.