Automation is used to control systems to control processes, reducing the human intervention. Automation is having technology do things for you so that you don’t have to.
If you talking about Automation. It is all around us. E.g. When you are at traffic lights, there isn’t a traffic light operator that decides when to change the light from red to green or green to yellow .Everything done automatically. The street lights come on automatically. There are no lamplighters turning each light on anymore. We can apply the same idea to our own life. Most of us can’t create complex control systems, but we can do our best with what is available.
Automation is controlled by Programmable Logic Controller (PLC) and Overseen by Supervisory Control and Data Acquisition (SCADA). This helps you to control the circuit instantaneously without changing any hardware.