The Internet of Things (IoT) involves networks of physical devices—sensors, actuators, embedded systems—connected via software and the internet to collect, exchange, and act on data. Beyond phones/laptops, IoT spans smart homes, industrial machinery, transport, healthcare, agriculture, utilities, and retail. Key features include remote monitoring, predictive diagnostics, automation, edge computing, and real-time data analytics. Emerging focus areas are consumer demand for smart home devices, the rise of connected infrastructure (smart cities, smart buildings), remote patient monitoring, and strong emphasis on data privacy and environmental & ethical implications.