Supervisory Control and Data Acquisition (SCADA) is required for controlling activities in dams, power grid stations, oil refineries, large server control services, and so on.
SCADA systems are built for highly specific tasks, such as controlling the level of water dispatched, controlling the gas lines, controlling the electricity power grid to control power in a particular city, and so on.
SCADA systems are Industrial Control System (ICS) type systems, which are used in critical environments or where life is at stake if anything goes wrong. ICS are systems that are used in large industries where they are responsible for controlling various processes, such as mixing two chemicals in a definite ratio, inserting carbon dioxide in a particular environment, putting proper amounts of water in the boiler, and so on.