Internet of Things (IoT) is where all things are connected and their are changeable. "Things" typically refers to electronic devices that has capabilities to sensor and connect, like wearable, computers. Why IoT matters? IoT makes the world smarter. With IoT, we can have smart city, smart grid, smart water,etc. It is actually through its capabilities of sending, receiving and (or) processing data, bringing more timely valuable data and insights. The market size prediction What problems are IoT facing?