Using the standalone version of Node-RED

Now we will learn what the standalone version of Node-RED is and how it differs from other versions. We usually use the Node-RED flow editor as a standalone editor; however, we can also use the Node-RED flow editor on any cloud with container technologies such as Docker, Kubernetes, or Cloud Foundry. We will explicitly demonstrate the use of the standalone version with relatively common use cases to learn how to use it.

Let's think about situations where Node-RED is used.

Node-RED is a tool for creating applications made with Node.js. It is also the execution environment. If you can write an application in Node.js, that's fine.

So, why build an application with Node-RED?

One answer is to black-box each individual unit of data processing. This makes the role of each process very clear and easy to build and maintain.

Another answer is to avoid human error. Since each process is modularized as a node, you only need to...