Complexity of an IIoT system

An IIoT system is a significantly complex ecosystem of diverse components that is in a state of continuous change, never static, and always evolving with various parts of the ecosystem prone to different types of stress and failures. A node on the edge will be added or removed every day, cloud connectivity will be lost, or new builds on the cloud will be deployed multiple times per day. In addition, old APIs could be swapped for newer and better ones at an astounding pace. Making the system reliable and fault-tolerant is paramount to the successful usage of the application. Before we dive into discussing the various aspects of this chapter, let's look at a typical architecture of the IIoT system for reference. A typical IIoT system consists of cloud services such as APIs, runtimes, a data store, messaging services, and edge gateways deployed on...