There have main four key levels in IOT Architecture It is Application layer, Support layer, Network layer and persistence layer instead of the Device layer. The lowest The level is persistence layer it is also known as recognition.including information of object properties and environmental conditions etc; and also physical information is RFID readers, various sensors, GPS and many more items. The main purpose is that the layer is collecting data by sensors To the physical world to the digital world. The Next Level is the network layer.It is doing transmission information from the persistence layer to support layer vice versa.in this layer, transmission is occurring several networks, which is satellite nets, internet, mobile communication networks, wireless networks and communication protocols are help to exchange information to the devices. The next level is the third layer.we called as support layer.it is provided service connecting application layer and the network layer. ...