An Automated External Defibrillator (AED) is a portable device designed to assist individuals experiencing sudden cardiac arrest. It operates by delivering an electric shock to the heart, which helps to restore a normal heartbeat. The AED is user-friendly, featuring clear instructions and voice prompts that guide users through each step, making it accessible even to those without medical training. Once the sticky pads (electrodes) are attached to the person’s chest, the AED automatically analyzes the heart’s rhythm to determine if a shock is needed. If a shock is necessary, the device will prompt the user to press a button to deliver it. Compact and easy to use, AEDs are found in public places and medical settings, providing a crucial opportunity to save lives by restoring a normal heart rhythm before professional medical help arrives.