This document sets guidelines for the selection, location, monitoring, maintenance, and certification of automated external defibrillator (AED) systems in workplaces and public spaces. An AED system includes the AED device, fault detection, communications network, emergency response, post-incident support, enclosure, monitoring, maintenance, training program, and inspection/registration with the AED deployment registry. Applicants seeking certification must comply with the requirements and duty holders are responsible for providing AED systems that meet the guidelines, though the registry accepts no liability for failures or damages.