Summary
In this chapter, we have learned what the IoT is, why we need the IoT, and what IoT solution architecture looks like at a high level. We covered different IoT solution architecture layers, starting with the IoT devices layer, which hosts IoT endpoint devices, sensors, actuators, microcontrollers, and so on. We also discussed the IoT Edge layer, which hosts IoT Edge computing and platforms, and then the IoT backend cloud, which hosts all IoT applications, platforms, and solutions. We explored the IoT connectivity layer, which is responsible for IoT connectivity across the whole IoT solution, and finally, the IoT security and access management layer, which is responsible for the security controls and access management of the whole IoT solution. We also covered different IoT solution design patterns, including Telemetry, Command, Bootstrapping, Device Twin/Shadow, and IoT device outbound connectivity. At the end of the chapter, we talked about a smart parking case study, which we will use throughout the book's chapters when needed.
In the next chapter, we will start with the anatomy of the word IoT. We will start with the letter I in IoT, which refers to the internet or, in other words, IoT connectivity.