This document provides an overview of the Internet of Things (IoT). It defines IoT as anything that can be connected to the internet, such as devices with tags, RFID, NFC, barcodes, or QR codes. It notes that there are two key aspects: devices and server-side infrastructure. It discusses examples of IoT devices like Arduino systems, Raspberry Pi systems, and smartphones. It also provides examples of IoT applications, such as an early warning flood system and a smart trolley system.