An Automated External Defibrillator (AED) is a life-saving medical device designed for use in cases of sudden cardiac arrest. It is engineered to be user-friendly, allowing even those without medical training to provide immediate aid. The Automated External Defibrillator analyzes the heart’s rhythm and, if necessary, delivers an electric shock, known as defibrillation, to help the heart re-establish an effective rhythm. Its portability and simplicity make it an invaluable tool in public spaces, workplaces, and, increasingly, in homes. Automated External Defibrillators often come with clear audio and visual instructions, ensuring that even laypersons can use them effectively during critical emergencies. The widespread availability and use of Automated External Defibrillators have significantly improved survival rates from cardiac arrests outside hospital settings.