Dynamic voltage scaling (DVS) is a power management technique used in electronic devices to adjust the voltage and frequency of a processor based on its workload. By lowering the voltage during less demanding tasks, DVS helps reduce power consumption and heat generation, which can extend battery life in devices like smartphones and laptops. This method is particularly important in modern computing, where energy efficiency is crucial. DVS allows systems to balance performance and power usage, making it a key feature in technologies such as mobile processors and embedded systems. By optimizing energy use, DVS contributes to overall system efficiency and sustainability.