Instrumentation

A couple related flavors:

• In computer programming, instrumentation is the act of modifying software so that analysis can be performed on it. https://en.wikipedia.org/wiki/Instrumentation_(computer_programming)
• Instrumentation and control engineering (ICE) is a branch of engineering that studies the measurement and control of process variables. https://en.wikipedia.org/wiki/Instrumentation_and_control_engineering
  • A control loop is the fundamental building block of control systems in general and industrial control systems in particular. https://en.wikipedia.org/wiki/Control_loop