Power management refers to the process of managing the distribution, use, and conservation of electrical power in a system or device. It involves ensuring that the system or device has a reliable power supply, and that the power is being used efficiently and effectively. Power management is important in a wide range of applications, including personal computers, mobile devices, and industrial and commercial systems, where the efficient use of power can reduce energy costs and improve the performance and reliability of the system. There are many different techniques and technologies that can be used for power management, including power-saving modes, power-aware scheduling, and power capping, among others. Power management is often implemented using specialized hardware and software components, and may also involve the use of power-efficient devices and practices.