IoT stack

In simple terms we can say Internet of Things (IoT) is a system of things integrated with sensors, softwares, electronics which are connected to each other & can exchange data or Information with other connected devices. The Sensors & devices can be like temperature sensor, motion sensor, camera, GPS etc. and to connect these devices each others there should be a medium like Internet ( WiFi), Bluetooth , satellite, Cellular etc. And last the data send between the devices need to be stored & analyzed like in cloud, data analytics software etc. There can be optional user interface also be part of it in through which useful information can be viewed, monitored, alerts can be set etc. The Internet of Things (IoT) is the network of things (physical devices, vehicles, home appliances, and other items embedded with electronics, software, sensors, actuators) connected through internet which enables these things to exchange data. This creates opportunities for more direct integration of the physical world into computer-based systems, resulting in efficiency improvements, economic benefits, and reduced human exertions. The number of IoT devices increased 31% year-over-year to 8.4 billion in 2017 and it is estimated that there will be 30 billion devices by 2020 Connectivity or network is the crucial technology for IoT, there are several wired & wireless technologies available now Short range wireless communicationrnBluetooth, wireless, Radio frequency, Z-wave, Zigbee Medium range wireless communicationrnLTE advanced, Halow Long range wireless communicationrnLong range wireless, satellite WiredrnEthernet, power line communication