Partial Reconfiguration is a technique used in Field Programmable Gate Arrays (FPGAs) that allows specific sections of the hardware to be reprogrammed while the rest of the device continues to operate. This enables designers to update or modify parts of a system without interrupting its overall functionality, making it efficient for applications that require frequent updates. This method is particularly useful in embedded systems and telecommunications, where maintaining continuous operation is critical. By selectively reconfiguring only the necessary components, developers can save time and resources, leading to more flexible and adaptable designs in various technological fields.